Physics Chapter 23

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    Modern automobile headlights are connected in

    • Parallel
    • Perpendicular
    • Series
    • None of these
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Physics Chapter 23

Chapters Of Physics Quizzes & Trivia

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  • 2. 

    The current through a 10-ohm resistor connected to a 120-V power supply is

    • 1 A

    • 10 A

    • 12 A

    • 120 A

    • None of these

    Correct Answer
    A. 12 A
  • 3. 

    An ampere is a unit of electrical

    • Pressure

    • Current

    • Resistance

    • All of these

    • None of these

    Correct Answer
    A. Current
  • 4. 

    The headlights, radio, and defroster fan in an automobile are connected in

    • Series

    • Parallel

    Correct Answer
    A. Parallel
  • 5. 

    When a 10-V battery is connected to a resistor, the current in the resistor is 2A. What is the resistor's value?

    • 2 ohms

    • 5 ohms

    • 10 ohms

    • 20 ohms

    • More than 20 ohms

    Correct Answer
    A. 5 ohms
  • 6. 

    What is the power rating of a light bulb if 0.8 A flow through it when it is connected to a 120-volt outlet?

    • 12 W

    • 15 W

    • 60 W

    • 96 W

    • 120 W

    Correct Answer
    A. 96 W
  • 7. 

    A 10-ohm resistor has a 5-A current in it. What is the voltage across the resistor?

    • 5 V

    • 10 V

    • 15 V

    • 20 V

    • More than 20 V

    Correct Answer
    A. More than 20 V
  • 8. 

    Heat a copper wire and its electric resistance

    • Decreases

    • Remains uncharged

    • Increases

    Correct Answer
    A. Increases
  • 9. 

    Electrons move in an electrical circuit

    • By being bumped by other electrons

    • By colliding with molecules

    • By interacting with an established electric field

    • Because the wires are so thin

    • None of these

    Correct Answer
    A. By interacting with an established electric field
  • 10. 

    In an electric circuit, the safety fuse is connected to the circuit in

    • Series

    • Parallel

    Correct Answer
    A. Series
  • 11. 

    When two lamps are connected in series to a battery, the electrical resistance that the battery senses is

    • More than the resistance of either lamp

    • Less than the resistance of either lap

    • None of these

    Correct Answer
    A. More than the resistance of either lamp
  • 12. 

    Electrons are made to flow in a wire when there is 

    • An imbalance of charges in the wire

    • More potential energy at one end of the wire than the other

    • A potential difference across its ends

    Correct Answer
    A. A potential difference across its ends
  • 13. 

    On some early automobiles both headlights went out when one bulb burned out. The headlights must have been connected in

    • Parallel

    • Perpendicular

    • Series

    • Haste

    Correct Answer
    A. Series
  • 14. 

    Which is more dangerous, touching a faulty 110-volt light fixture, or a van de graaff generator charged to 100,00 volts?

    • Touching the light fixture

    • Touching the generator

    • Touching both are about equally dangerous

    Correct Answer
    A. Touching the light fixture
  • 15. 

    In an ac circuit, the electric field

    • Increases via the inverse square law

    • Changes magnitude and direction with time

    • Is everywhere the same

    • Is non-existent

    • None of these

    Correct Answer
    A. Changes magnitude and direction with time
  • 16. 

    When a light switch is turned on in a dc circuit, the average speed of electrons in the lamp is

    • The speed of sound waves in metal

    • The speed of light

    • 1000 cm/s

    • Less than 1 cm/s

    • Dependent on how quickly each electron bumps into the next electron

    Correct Answer
    A. Less than 1 cm/s
  • 17. 

    Which statement is correct?

    • Charge flows in a circuit

    • Voltage flows through a circuit

    • Resistance is established across a circuit

    • Current causes voltage

    Correct Answer
    A. Charge flows in a circuit
  • 18. 

    As more lamps are put into a parallel circuit, the overall current in the power source

    • Increases

    • Decreases

    • Stays the same

    Correct Answer
    A. Increases
  • 19. 

    Compared to a single lamp connected to a battery, two lamps connected in parallel to the same battery will carry

    • More current

    • Less current

    • The same current

    Correct Answer
    A. More current
  • 20. 

    An electrical diode is useful for

    • Storing electrical energy

    • Boosting voltage

    • Limiting current

    • Voltage modification

    • Changing ac to dc

    Correct Answer
    A. Changing ac to dc
  • 21. 

    Compared to the filament thickness of a 60-W light bulb, the filament of a 100-W light bulb will be

    • Thinner

    • Thicker

    • The same

    Correct Answer
    A. Thicker
  • 22. 

    When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is

    • More than the resistance of either lamp

    • Less than the resistance of either lamp

    • None of these

    Correct Answer
    A. Less than the resistance of either lamp
  • 23. 

    A 100-watt lamp glows brighter than a 25-Watt lamp. The electrical resistance of the 100-watt lamp must be

    • Less

    • Greater

    • The same

    Correct Answer
    A. Less
  • 24. 

     a circuit breaker serves the same purpose as 

    • A switch

    • A fuse

    • A capacitor

    • A battery

    • None of these

    Correct Answer
    A. A fuse
  • 25. 

    A 60 W light bulb and a 100- W light bulb are each connected to a 120 V outlet. Which light bulb has more current in it?

    • The 60- W bulb

    • The 100- W bulb

    • Both have the same current

    Correct Answer
    A. The 100- W bulb
  • 26. 

    In a common dc circuit, electrons move at speeds of

    • A fraction of a centimeter per second

    • Many centimeters per second

    • The speed of a sound wave

    • The speed of light

    • None of these

    Correct Answer
    A. A fraction of a centimeter per second
  • 27. 

    As more lamps are put into a series circuit, the overall current in the power source

    • Increases

    • Decreases

    • Stays the same

    Correct Answer
    A. Decreases
  • 28. 

    The electric power of a lamp that carries 2 A at 120 V is

    • 1/6 watts

    • 2 watts

    • 60 watts

    • 20 watts

    • 240 watts

    Correct Answer
    A. 240 watts
  • 29. 

    The source of electrons lighting an incandescent as light bulb is

    • The power company

    • Electrical outlet

    • Atoms in the light bulb filament

    • The wire leading to the lamp

    • The source voltage

    Correct Answer
    A. Atoms in the light bulb filament
  • 30. 

    Compared to the resistance of two resistors connected in series, the same two resistors connected in parallel have

    • More resistance

    • Less resistance

    • The same resistance

    Correct Answer
    A. Less resistance
  • 31. 

    Stretch a copper wire so that it is thinner and the resistance between its ends

    • Decreases

    • Remains unchanged

    • Increases

    Correct Answer
    A. Increases
  • 32. 

    A 60- W light bulb and a 100-W light bulb are each rated at 120 V. which light bulb has a larger resistance?

    • The 60- W bulb

    • The 100- W bulb

    • Both have the same resistance

    Correct Answer
    A. The 60- W bulb
  • 33. 

    A woman experiences an electrical shock. The electrons making the shock come from the

    • Woman's body

    • Ground

    • Power plant

    • Hairdryer

    • Electric field in the air

    Correct Answer
    A. Woman's body
  • 34. 

    The number of electrons delivered daily to an average American home by an average power utility in the mid 1980s was

    • Zero

    • 110

    • 220

    • Billion of billions

    • None of these

    Correct Answer
    A. Zero
  • 35. 

    A coulomb of charge that passes through a 6-volt battery is given

    • 6 joules

    • 6 amperes

    • 6 ohms

    • 6 watts

    • 6 newtons

    Correct Answer
    A. 6 joules
  • 36. 

    The power dissipated in a 4-ohm resistor carrying 3 A is 

    • 7 W

    • 18 W

    • 36 W

    • 48 W

    • Not enough information to say

    Correct Answer
    A. 36 W
  • 37. 

    A heater uses 20 A when used in a 110-V line. If electric power costs 10 cents per kilowatt hour, the cost of running the heater for 10 hours is

    • $0.22

    • $0.55

    • $2.20

    • $5.50

    • None of these

    Correct Answer
    A. $2.20
  • 38. 

    Alternating current is normally produced by a

    • Battery

    • Generator

    • Both of these

    • Neither of these

    Correct Answer
    A. Generator
  • 39. 

    A 4-ohm resistor is connected in parallel with a 6-ohm resistor. this combination produces an equivalent resistance of 

    • 2.4 ohms

    • 4 ohms

    • 5 ohms

    • 5.5 ohms

    • 10 ohms

    Correct Answer
    A. 2.4 ohms
  • 40. 

    Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is

    • Definitely less

    • Often less

    • Actually more

    • The same

    • Incredibly all of these

    Correct Answer
    A. The same
  • 41. 

    A wire that carries an electric current

    • Is electrically charged

    • May be electrically charged

    • Is never electrically charged

    Correct Answer
    A. May be electrically charged
  • 42. 

    The source of electrons in an ordinary electrical circuit is

    • A dry cell, wet cell or battery

    • The back emf of motors

    • The power station generator

    • The electrical conductor itself

    • None of these

    Correct Answer
    A. The electrical conductor itself
  • 43. 

    Two lamps, one with a thick filament and one with a thin filament, are connected in parallel to a battery. the voltage is greatest across the lamp with the

    • Thick filament

    • Thin filament

    • Both voltages are the same

    Correct Answer
    A. Both voltages are the same
  • 44. 

    Two lamps, one with thick filament and one with a thin filament of the same material, are connected in parallel to a battery. the current is larger in the lamp with the

    • Thick filament

    • Thin filament

    • Current is the same in both

    Correct Answer
    A. Thick filament
  • 45. 

    Connect a pair of lamps in series and you draw current from the connected battery. connect the same lamps in parallel and you draw

    • The same current

    • More current

    • Less current

    • Sometimes more, sometimes less

    Correct Answer
    A. More current
  • 46. 

    A 60-watt light bulb is connected to a 120-volt plug. what is the current in the light bulb?

    • 0.25 A

    • 0.5 A

    • 2 A

    • 4 A

    • More than 4 A

    Correct Answer
    A. 0.5 A
  • 47. 

    Compared to a single lamp connected to a battery, two identical lamps connected in series to the same batter will carry

    • More current

    • Less current

    • The same current

    Correct Answer
    A. Less current
  • 48. 

    In the circuit of figure 23-A, energy is given to the moving charges by

    • The bulb

    • The wires

    • A generator which is not shown

    • Non of these

    Correct Answer
    A. A generator which is not shown
  • 49. 

    A capacitor is used to store

    • Charge

    • Energy

    • Both

    • Neither

    Correct Answer
    A. Both

Quiz Review Timeline (Updated): Jan 15, 2013 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 15, 2013
    Quiz Edited by
    ProProfs Editorial Team
  • May 26, 2010
    Quiz Created by
    Qtkhmerqueen143
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