Physical Science Benchmark #1 Review

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  • 1/77 Questions

    The formula for calculating work is F x d A family car ran out of gas in the left lane of a busy street.  The father got out of the car and tried to push the car to the gas station.  He used about 600 N of force, but the car moved a distance of 0.  How much work was done?

    • 600 J
    • 1200 J
    • 300 J
    • 0 J
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Physical Science Benchmark #1 Review - Quiz
About This Quiz

The 'Physical Science Benchmark #1 Review' quiz assesses understanding of basic electrical concepts including Ohm's Law, electric current, and voltage. It targets key skills in interpreting and applying physics principles related to electricity, suitable for students enhancing their knowledge in physical sciences.

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  • 2. 

    The formula for calculating work is W= F x d Jerry pulled the library cart 3 meters with a force of 17 N.  How much work was done?

    • 51 J

    • 20 J

    • 14 J

    • 5.6 J

    Correct Answer
    A. 51 J
    Explanation
    Jerry pulled the library cart 3 meters with a force of 17 N. To calculate the work done, we use the formula W = F x d, where W is the work done, F is the force applied, and d is the distance moved. Plugging in the values, we get W = 17 N x 3 m = 51 J. Therefore, the work done is 51 J.

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  • 3. 

    A  ____ ____ is related to the force that causes electric charges to flow.

    • Electric currents

    • Voltage difference

    • Dry cell batteries

    • Current flow

    Correct Answer
    A. Voltage difference
    Explanation
    A voltage difference is related to the force that causes electric charges to flow. Voltage difference refers to the potential energy difference between two points in an electric circuit, which creates an electric field that pushes the charges to move. This potential difference is what drives the flow of electric current through a conductor, as charges move from an area of higher voltage to an area of lower voltage. Therefore, the correct answer is "Voltage difference."

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  • 4. 

    What is the unit for voltage?

    • Volts

    • Amperes

    • Ohms

    • Joules

    Correct Answer
    A. Volts
    Explanation
    The unit for voltage is volts. Voltage is a measure of the electric potential difference between two points in a circuit. It represents the amount of energy per unit charge that is transferred from one point to another. The volt is named after the Italian physicist Alessandro Volta, who invented the electric battery. It is commonly used in electrical engineering and physics to quantify the strength of an electric field or the potential difference across a circuit component.

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  • 5. 

    What is current?

    • The flow of charges, usually in the form of electrons

    • The newness of a battery or resistor

    • Something that blocks or slows the flow of electrons

    • The potential energy stored in a battery

    Correct Answer
    A. The flow of charges, usually in the form of electrons
    Explanation
    Current is defined as the flow of electric charges, typically in the form of electrons. It refers to the movement of charged particles through a conductor, such as a wire. The flow of these charges creates an electric current, which can be measured in units of amperes.

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  • 6. 

    A temporary magnet created when current flows through wire wrapped in coils around an iron bar.

    • Permanent magnet

    • Electro magnet

    • Powerful magnet

    Correct Answer
    A. Electro magnet
    Explanation
    An electro magnet is a temporary magnet that is created when current flows through wire wrapped in coils around an iron bar. The flow of current generates a magnetic field, which magnetizes the iron bar. Unlike a permanent magnet, an electro magnet only exhibits magnetism when the current is flowing through the wire. This makes it a versatile tool that can be turned on or off by controlling the current flow, making it useful in various applications such as electric motors and magnetic lifting devices.

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  • 7. 

    An object that has kinetic energy must be _____.

    • Moving.

    • Falling.

    • At an elevated position.

    • At rest.

    Correct Answer
    A. Moving.
    Explanation
    An object that has kinetic energy must be moving because kinetic energy is the energy possessed by an object due to its motion. If an object is not moving, it does not have any kinetic energy. Therefore, the correct answer is moving.

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  • 8. 

    Stored energy that results from the position or shape of an object is called...

    • Potential energy

    • Kinetic energy

    • Thermal energy

    Correct Answer
    A. Potential energy
    Explanation
    Potential energy is the correct answer because it refers to the stored energy that an object possesses due to its position or shape. This energy has the potential to be converted into other forms of energy, such as kinetic energy, when the object is in motion. Thermal energy refers to the energy associated with the temperature of an object, while kinetic energy is the energy of an object in motion.

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  • 9. 

    The formula to calculate work is   W= F x d How much work was done is 5 N of force was used to move an object 25 meters?

    • 30 Joules

    • 125 Joules

    • 5 Joules

    • 20 Joules

    Correct Answer
    A. 125 Joules
    Explanation
    The formula to calculate work is W = F x d. In this question, the force used is 5 N and the distance moved is 25 meters. By substituting these values into the formula, we get W = 5 N x 25 m = 125 Joules. Therefore, the correct answer is 125 Joules.

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  • 10. 

    The formula for calculating work = W= F x d A vehicle at the wrecking yard was pushed forward 7 meters with a force of 5000 N.  How much work was done?

    • 5007 J

    • 4993 J

    • 35000 J

    • 714.2 J

    Correct Answer
    A. 35000 J
    Explanation
    The formula for calculating work is W = F x d, where W is the work done, F is the force applied, and d is the distance over which the force is applied. In this case, the force applied is 5000 N and the distance over which it is applied is 7 meters. Therefore, the work done can be calculated as W = 5000 N x 7 m = 35000 J.

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  • 11. 

    According to the definition for work, in order for work to be accomplished their must be a force exerted on an object and

    • The object must move in the opposite direction of the applied force

    • The object must move in the same direction as the applied force

    • The object must be lifted up

    • The object must move a distance less than 100 meters

    Correct Answer
    A. The object must move in the same direction as the applied force
    Explanation
    According to the definition of work, work is accomplished when a force is exerted on an object and the object moves in the same direction as the applied force. This means that the force and displacement must be in the same direction for work to be done. If the object moves in the opposite direction of the applied force, no work is being done as the force and displacement are in opposite directions. Lifting the object up or moving a distance less than 100 meters are not necessary conditions for work to be accomplished, as long as the force and displacement are in the same direction.

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  • 12. 

    The formula for calculating work is W= F x d A pulley is used to lift a heavy piano 6 meters up to the second floor.  The amount of force applied upward is 700 N.  How much work was done?

    • 706 J

    • 4200 J

    • 116.6 J

    • 694 J

    Correct Answer
    A. 4200 J
    Explanation
    The formula for calculating work is W = F x d, where W represents work, F represents force, and d represents distance. In this scenario, the force applied upward is 700 N and the distance the piano is lifted is 6 meters. Therefore, to calculate the work done, we multiply the force by the distance: W = 700 N x 6 m = 4200 J.

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  • 13. 

    The ability to do work or cause change is...

    • Work

    • Gravity

    • Energy

    Correct Answer
    A. Energy
    Explanation
    Energy is the correct answer because it is the capacity or ability to do work or cause change. Energy can exist in various forms such as kinetic energy, potential energy, thermal energy, etc. It is essential for any type of work or change to occur, making it a fundamental concept in physics.

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  • 14. 

    The energy an object has while in motion is...

    • Elastic potential energy

    • Gravitational potential energy

    • Kinetic energy

    Correct Answer
    A. Kinetic energy
    Explanation
    Kinetic energy is the energy possessed by an object due to its motion. It depends on the mass and velocity of the object. When an object is in motion, it has the ability to do work and transfer energy. Therefore, kinetic energy is the correct answer as it describes the energy an object has while in motion.

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  • 15. 

    The net movement of electric charges in a singe direction.

    • Voltage difference

    • Electric current

    • Electric circuits

    • Batteries

    Correct Answer
    A. Electric current
    Explanation
    Electric current refers to the flow of electric charges in a single direction. It is the movement of electrons through a conductor, such as a wire. This flow of charges is caused by a voltage difference, which creates an electric field that pushes the charges along. Electric circuits, which consist of interconnected components, provide a path for the current to flow. Batteries, as a source of electrical energy, create the voltage difference needed to establish and maintain the electric current in a circuit.

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  • 16. 

    What is the unit for current?

    • Volts

    • Amperes

    • Ohms

    • Joules

    Correct Answer
    A. Amperes
    Explanation
    The unit for current is amperes. Amperes is the SI unit for measuring electric current, which is the flow of electric charge in a circuit. It is named after the French physicist André-Marie Ampère, who made significant contributions to the field of electromagnetism. Volts, ohms, and joules are units for voltage, resistance, and energy respectively, and are not used to measure current.

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  • 17. 

    What is the unit for energy?

    • Volts

    • Amperes

    • Ohms

    • Joules

    Correct Answer
    A. Joules
    Explanation
    The unit for energy is joules. Joules is the standard unit of measurement for energy in the International System of Units (SI). It is named after the English physicist James Prescott Joule, who made significant contributions to the study of energy. Volts, amperes, and ohms are units of measurement for electrical quantities such as voltage, current, and resistance, respectively, but they are not units for energy.

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  • 18. 

    Which of these is the equation for Ohm's Law?

    • W = Fd

    • V = IR

    • R = IV

    • PE = mgh

    Correct Answer
    A. V = IR
    Explanation
    Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with the constant of proportionality being the resistance (R) of the conductor. Therefore, the equation V = IR represents Ohm's Law, where V is the voltage, I is the current, and R is the resistance.

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  • 19. 

    Why can birds sit on a power line?

    • Because birds have minimal resistance compared to household electronics, so current is diverted to the houses instead

    • Because the wire is in the air and air has infinite resistance so no current flows through the wire

    • Because birds' feet are insulated so current is not conducted through them

    • Because both feet are on the same voltage line, so there is no potential difference, so current does not flow through the bird

    Correct Answer
    A. Because both feet are on the same voltage line, so there is no potential difference, so current does not flow through the bird
    Explanation
    Birds can sit on a power line because both of their feet are on the same voltage line. This means that there is no potential difference between the bird's feet, which prevents the flow of current through the bird.

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  • 20. 

    A certain steam iron carries a current of 6.4 A when connected to a 120 V source.  What is the resistance of the steam iron?

    • 1.875 Ω

    • 0.05 Ω

    • 768 Ω

    • 18.75 Ω

    Correct Answer
    A. 18.75 Ω
    Explanation
    When a steam iron is connected to a 120 V source and carries a current of 6.4 A, we can use Ohm's Law to calculate the resistance. Ohm's Law states that resistance (R) is equal to voltage (V) divided by current (I). Therefore, the resistance of the steam iron can be calculated as 120 V divided by 6.4 A, which equals 18.75 Ω.

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  • 21. 

    The resistance of a hotplate is 48 Ω .  How much current does the plate carry when connected to a 120-V source?

    • 120 A

    • 2.5 A

    • 5760 A

    • 0.4 A

    Correct Answer
    A. 2.5 A
    Explanation
    The current flowing through a circuit can be calculated using Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R). In this case, the voltage is 120 V and the resistance is 48 Ω. Therefore, the current flowing through the hotplate can be calculated as 120 V / 48 Ω = 2.5 A.

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  • 22. 

    A cyclist accelerates from rest to 12m/s in 4s. His acceleration is:-

    • 48m/s2

    • 3m/s2

    • 0.33m/s2

    • 1.33m/s2

    • 0.75m/s2

    Correct Answer
    A. 3m/s2
    Explanation
    The cyclist accelerates from rest to 12m/s in 4s. Acceleration is defined as the change in velocity divided by the time taken. In this case, the change in velocity is 12m/s (final velocity) minus 0m/s (initial velocity), which equals 12m/s. Dividing this by the time taken of 4s gives an acceleration of 3m/s2.

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  • 23. 

    The units of acceleration are:-

    • Metres

    • Metres per second

    • Metres per second squared

    • Joules

    • Newtons

    Correct Answer
    A. Metres per second squared
    Explanation
    The units of acceleration are measured in meters per second squared. This is because acceleration is defined as the rate of change of velocity over time. Velocity is measured in meters per second, and when it changes over time, the unit becomes meters per second squared. This unit represents how much the velocity changes per second, indicating the rate at which an object's speed or direction is changing.

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  • 24. 

    If an object is moving at a constant velocity, the forces on it are:-

    • Resolved

    • Forwards

    • Balanced

    • Opposite

    • Unequal

    Correct Answer
    A. Balanced
    Explanation
    If an object is moving at a constant velocity, it means that the object is not accelerating. According to Newton's first law of motion, an object will continue to move at a constant velocity unless acted upon by an external force. Therefore, if the object is not accelerating, it must be experiencing balanced forces. Balanced forces occur when the forces acting on an object are equal in magnitude and opposite in direction, resulting in a net force of zero.

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  • 25. 

    If a bicycle and rider of mass 80kg is accelerating at 1.5m/s2 the force pushing it is:-

    • 0.02N

    • 81.5N

    • 120N

    • 120m

    • 120kg

    Correct Answer
    A. 120N
    Explanation
    When a bicycle and rider are accelerating, there is a force acting on them in the direction of the acceleration. According to Newton's second law of motion, the force can be calculated by multiplying the mass of the bicycle and rider (80kg) by the acceleration (1.5m/s^2). Therefore, the force pushing the bicycle and rider is 120N.

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  • 26. 

    A circuit in which each object is connected to the cell separately

    • Series circuit

    • Parallel circuit

    • Complete circuit

    Correct Answer
    A. Parallel circuit
    Explanation
    A parallel circuit is a circuit configuration where each object or component is connected to the cell separately. In a parallel circuit, the components are connected side by side, allowing the current to flow through each component independently. This means that if one component fails or is removed, the other components will continue to work unaffected. In contrast, a series circuit connects the components in a single path, where the failure of one component will interrupt the flow of current to the rest of the components.

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  • 27. 

    A reusable switch that protects circuits from dangerously high currents

    • Circuit

    • Fuse

    • Circuit breaker

    Correct Answer
    A. Circuit breaker
    Explanation
    A circuit breaker is a reusable switch that is designed to protect circuits from dangerously high currents. It works by automatically interrupting the flow of electricity when it detects a fault, such as a short circuit or overload. This helps to prevent damage to the circuit and any connected devices, as well as reducing the risk of electrical fires. Unlike a fuse, which needs to be replaced after it trips, a circuit breaker can be reset and used again, making it a more convenient and cost-effective option for circuit protection.

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  • 28. 

    A region of magnetic force around a magnet

    • Pole

    • Discharge

    • Magnetic field

    Correct Answer
    A. Magnetic field
    Explanation
    A magnetic field refers to a region surrounding a magnet where magnetic forces are exerted. It is the area where the magnet's influence can be detected, and it is responsible for the magnetic attraction or repulsion observed between magnets or magnetic materials. The strength and direction of the magnetic field can vary depending on the characteristics of the magnet and its poles.

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  • 29. 

    One of two ends of a magnet where the pull is strongest

    • Discharge

    • Circuit

    • Pole

    Correct Answer
    A. Pole
    Explanation
    A pole is one of the two ends of a magnet where the pull is strongest. Magnets have a north pole and a south pole, and the magnetic field lines originate from the north pole and end at the south pole. The strength of the magnetic field is highest at the poles, which is why the pull is strongest at these points.

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  • 30. 

    If you break a bar magnet in two, what happens to the poles?

    • Each half will have only north or only south poles

    • Each half will have a north and a south pole

    • Both halves will have two south poles

    • Both halves will have two north poles

    Correct Answer
    A. Each half will have a north and a south pole
    Explanation
    When a bar magnet is broken in two, each half will still have a north and a south pole. This is because the magnetic field of a magnet is not confined to a specific region but extends throughout the entire magnet. Breaking the magnet does not change the orientation or arrangement of the magnetic domains within the material, so each half will retain its magnetic properties with one end being a north pole and the other end being a south pole.

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  • 31. 

    If the mass of an object is multipled by the Graviational Field Strength (g for earth), what does this give?

    • The objects height.

    • The objects width.

    • The objects weight.

    • The total energy of the object.

    • The density of the object.

    Correct Answer
    A. The objects weight.
    Explanation
    When the mass of an object is multiplied by the gravitational field strength (g), it gives the object's weight. Weight is the force exerted by gravity on an object, and it is directly proportional to the mass of the object. Therefore, multiplying the mass by the gravitational field strength gives the weight of the object.

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  • 32. 

    When you put your hand in a cup of ice water, your hand feels cold. This is because ___________.

    • Your hand gains the coldness from the ice water

    • Your hand loses thermal energy to the ice water

    • The ice water loses thermal energy to your hand

    • The ice water loses the coldness to your hand

    Correct Answer
    A. Your hand loses thermal energy to the ice water
    Explanation
    Thermal energy always flows from a region of higher temperature to a region of lower temperature.

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  • 33. 

    A track athlete throws a 2kg discus into a field with a velocity of 21m/s.  What is the momentum of the discus?

    • 10.5 kg x m/s

    • 42 kg x m/s

    • 14 kg x m/s

    • 0.05 kg x m/s

    • 48 kg x m/s

    Correct Answer
    A. 42 kg x m/s
    Explanation
    The momentum of an object is calculated by multiplying its mass by its velocity. In this case, the mass of the discus is given as 2kg and its velocity is given as 21m/s. Multiplying these two values together gives us a momentum of 42 kg x m/s.

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  • 34. 

    If an object has kinetic energy, then it also must have _____.     

    • Speed

    • Impulse

    • Acceleration

    • Force

    Correct Answer
    A. Speed
    Explanation
    If an object has kinetic energy, it means that it is in motion. Speed is a measure of how fast an object is moving, so if an object has kinetic energy, it must also have speed.

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  • 35. 

    A car accelerates at 6m/s2 for 4s. If it starts at rest its final speed is:-

    • 24m/s

    • 1.5m/s

    • 0.67m/s

    • 9m/s

    • 156m/s

    Correct Answer
    A. 24m/s
    Explanation
    The car accelerates at a constant rate of 6m/s^2 for 4 seconds. To find the final speed, we can use the formula v = u + at, where v is the final velocity, u is the initial velocity (which is 0 in this case), a is the acceleration, and t is the time. Plugging in the values, we get v = 0 + 6(4) = 24m/s. Therefore, the correct answer is 24m/s.

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  • 36. 
    Which graph represents a car with positive acceleration? - ProProfs

    Which graph represents a car with positive acceleration?

    • A

    • B

    • C

    • D

    • E

    Correct Answer
    A. A
    Explanation
    Graph A represents a car with positive acceleration because the velocity of the car is increasing over time. The slope of the graph is positive, indicating that the car is gaining speed.

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  • 37. 

    A device that creates alternating current by spinning an electric coil between magnets

    • Circuit

    • Electric motor

    • Generator

    Correct Answer
    A. Generator
    Explanation
    A generator is a device that creates alternating current by spinning an electric coil between magnets. This process induces a flow of electrons in the coil, generating electricity. Unlike an electric motor, which converts electrical energy into mechanical energy, a generator converts mechanical energy into electrical energy. Therefore, a generator is the correct answer in this case.

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  • 38. 

    A power source that transforms electrical energy into movement

    • Electric motor

    • Generator

    • Magnetism

    Correct Answer
    A. Electric motor
    Explanation
    An electric motor is a power source that converts electrical energy into movement. It uses the principle of electromagnetism to create a rotating magnetic field, which then interacts with a set of stationary magnets to produce rotational motion. This motion can be used to power various devices and machines. Unlike a generator, which converts mechanical energy into electrical energy, an electric motor performs the opposite function by transforming electrical energy into mechanical energy.

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  • 39. 

    The formula for calculating work is W= F x d. A body builder lifts the barbell up 1 meter with a force of 501 N. Then He uses 501 N to hold the barbell in place for 2 minutes. How much work was done?

    • 1002 J

    • 501 J

    • 500 J

    • 250. 5 J

    Correct Answer
    A. 501 J
    Explanation
    The work done can be calculated by multiplying the force applied by the distance moved. In the first part, the body builder lifts the barbell up 1 meter with a force of 501 N, so the work done is 501 J. In the second part, the body builder uses the same force of 501 N to hold the barbell in place for 2 minutes. However, since there is no distance moved, no work is done in this case. Therefore, the total work done is 501 J.

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  • 40. 

    6. If a person walked at 2 m/s for 12 s he/she would travel a distance of ________.

    • 24 m

    • 6 m

    • 4 m

    • None of the answers

    Correct Answer
    A. 24 m
    Explanation
    If a person walks at a speed of 2 m/s for 12 seconds, we can calculate the distance traveled by multiplying the speed by the time. Therefore, 2 m/s * 12 s = 24 m.

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  • 41. 

    7. How long would it take to travel 50 km traveling at a speed of 10 km/hr?


    • 3 hours

    • 1 hour

    • 5 hours

    • 50 hours

    Correct Answer
    A. 5 hours
    Explanation
    At a speed of 10 km/hr, it would take 5 hours to travel 50 km. This can be calculated by dividing the distance (50 km) by the speed (10 km/hr), which gives us 5 hours.

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  • 42. 

    The current in a circuit equals the voltage difference divided by the resistance.

    • Law of resistance

    • Law of compliance

    • Ohms Law

    • Conductivity Law

    • Static electricity

    Correct Answer
    A. Ohms Law
    Explanation
    Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage difference across it and inversely proportional to its resistance. In other words, the current in a circuit can be calculated by dividing the voltage difference by the resistance. This relationship is fundamental in understanding and analyzing electrical circuits, and it is named after the German physicist Georg Simon Ohm, who first formulated it. Therefore, Ohm's Law is the correct answer in this case.

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  • 43. 

    Voltage difference is measured in _____.

    • Amps

    • Electrodes

    • Volts

    • Centimeters

    Correct Answer
    A. Volts
    Explanation
    Voltage difference is measured in volts. Volts is the unit of measurement for voltage, which represents the amount of electric potential difference between two points in an electrical circuit. Amps, electrodes, and centimeters are not appropriate units for measuring voltage difference. Amps measure electric current, electrodes are used in electrical systems, and centimeters measure length or distance.

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  • 44. 

    What is the unit for resistance?

    • Volts

    • Amperes

    • Ohms

    • Joules

    Correct Answer
    A. Ohms
    Explanation
    The unit for resistance is ohms. Resistance is a measure of how much a material or device impedes the flow of electric current. It is represented by the symbol Ω and is named after the German physicist Georg Simon Ohm. Volts, amperes, and joules are units of voltage, current, and energy respectively, and are not directly related to resistance.

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  • 45. 

    The key difference between velocity and speed is:-

    • Speed only applies to cars

    • Speed only applies when object move slowly.

    • Velocity is when the speed changes.

    • Velocity only applies to science experiments

    • Velocity is used when the direction matters.

    Correct Answer
    A. Velocity is used when the direction matters.
    Explanation
    The correct answer is "velocity is used when the direction matters." In physics, velocity is a vector quantity that includes both speed and direction. Speed, on the other hand, is a scalar quantity that only measures how fast an object is moving without considering the direction. Therefore, velocity is used when the direction of motion is important, while speed can be used regardless of the direction.

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  • 46. 

    A material through which heat or electricity do not flow easily

    • Circuit

    • Current

    • Insulator

    • Conductor

    Correct Answer
    A. Insulator
    Explanation
    An insulator is a material that does not allow the easy flow of heat or electricity. Unlike conductors, which allow the flow of heat or electricity, insulators have high resistance and prevent the transfer of energy. This property makes insulators useful for electrical insulation and thermal insulation, as they can protect against electrical shocks and prevent heat loss or gain. Examples of insulators include rubber, plastic, glass, and wood.

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  • 47. 

    A material through which heat or electricity flows easily

    • Circuit

    • Current

    • Insulator

    • Conductor

    Correct Answer
    A. Conductor
    Explanation
    A conductor is a material that allows the flow of heat or electricity easily. It has low resistance, which means that electrons can move freely within it. This property makes conductors ideal for transmitting electricity or transferring heat efficiently.

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  • 48. 

    The buildup of an electric charge on a material

    • Discharge

    • Circuit

    • Static electricity

    • Current electricity

    Correct Answer
    A. Static electricity
    Explanation
    Static electricity refers to the buildup of an electric charge on a material. Unlike current electricity, which involves the flow of electric charges through a circuit, static electricity occurs when there is an imbalance of positive and negative charges on an object. This buildup of charge can be discharged through a circuit, resulting in a sudden flow of current electricity. Therefore, static electricity is the correct answer in this context.

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  • 49. 

    A stone is dropped from the top of a cliff. How does the energy of the stone change as it falls from the top of the cliff to the ground below?

    • Kinetic Energy of the stone transforms to gravitational potential energy.

    • Kinetic energy of the stone is dissipated as heat.

    • Potential energy of the stone transforms to kinetic energy.

    • There is no change is potential energy.

    • There is no change in kinetic energy.

    Correct Answer
    A. Potential energy of the stone transforms to kinetic energy.
    Explanation
    As the stone falls from the top of the cliff to the ground below, its potential energy decreases while its kinetic energy increases. This is because gravitational potential energy is converted into kinetic energy as the stone accelerates due to gravity. Therefore, the potential energy of the stone transforms into kinetic energy while falling.

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