# A Physics Practice Guide For Beginner's

55 Questions | Total Attempts: 1146  Settings  Want to brush up on your science basics? Do you think you can pass this quiz? What do you understand by magnetic theory? What is a dielectric? How electricity travels? Check out our online quiz to see how much you know and enhance your knowledge. Go for it!

• 1.
(201) Every atom must contain these types of particles.
• A.

Electrons and protons.

• B.

Electrons and neutrons.

• C.

Protons and neutrons.

• D.

Electrons, protons, and neutrons.

• 2.
(201) Up to how many valence electrons are needed to make a good conductor?
• A.

3.

• B.

4.

• C.

5.

• D.

6.

• 3.
(201) The term "dielectric" is used to describe
• A.

Conductors.

• B.

Insulators.

• C.

Doped atoms.

• D.

Semi-conductors.

• 4.
(202) This defines the flow or drift of electrons through a conductor in the same direction at the same time.
• A.

Conductivity.

• B.

Voltage.

• C.

Current.

• D.

Valence.

• 5.
(202) This is used to control current flow in a circuit.
• A.

Voltage.

• B.

Coulombs.

• C.

Resistance.

• D.

Conductivity.

• 6.
(202) The relationship of voltage, current, and resistance is expressed through
• A.

E, I, and C formula.

• B.

Power formulas.

• C.

Conductance.

• D.

Ohm’s Law.

• 7.
(203) Total current in a series circuit
• A.

Remains the same throughout the circuit.

• B.

Is the sum of the current through each component.

• C.

Is the reciprocal of the current through one component.

• D.

Is the reciprocal of the sum of the currents through each component.

• 8.
(203) In a series circuit, what is the wattage of a circuit with 28 volts applied and a total resistance of .2 ohms?
• A.

.14 watts (w).

• B.

.14 kilowatts (kw).

• C.

3.92 w.

• D.

3.92 kw.

• 9.
(203) What is the voltage drop in a series circuit with a power rating of 9.68 watts, resistances of .55 kilo ohms, 4 k ohms, and 450 ohms, and current flow through the resistors of 44 milliamp (ma), 44 ma, and 44 ma?
• A.

20 volt (v).

• B.

220v.

• C.

425v.

• D.

441v.

• 10.
(204) In a parallel circuit, the total voltage is equal to the
• A.

Sum of the voltages across each branch.

• B.

Voltage across each resistor.

• C.

Voltage across each branch.

• D.

The reciprocal of the voltage across the resistances.

• 11.
(204) Source current in a parallel circuit will be divided according to each branch’s
• A.

Voltage.

• B.

Power.

• C.

Length.

• D.

Resistance.

• 12.
(204) What is the total resistance of a parallel circuit with branch voltages of 440 volt (v) and 440v and branch currents of 4 amp (a) and 16a?
• A.

11 ohms.

• B.

22 ohms.

• C.

44 ohms.

• D.

68.75 ohms.

• 13.
(205) The area around a magnet where its influence can be felt, is defined as the
• A.

Magnetic theory.

• B.

Saturation principle.

• C.

Magnetic field.

• D.

Law of attraction and repulsion.

• 14.
(206) The electromechanical generation of a voltage requires a magnetic field, relative motion, and
• A.

A complete circuit.

• B.

A conductor.

• C.

An insulator.

• D.

• 15.
(206) In a simple generator, which would be the most difficult method used to increase the output?
• A.

Increase the area of the conductor.

• B.

Increase the amount of motion.

• C.

Increase the strength of the magnetic field.

• D.

Increase the relative resistance.

• 16.
(206) The principle behind all electromechanical generation that many aerospace equipment devices have as their basis is
• A.

Conduction.

• B.

Commutation.

• C.

Rectification.

• D.

Electromagnetic induction.

• 17.
(206) The function of the commutator in a direct current (DC) generator is to
• A.

Complete the circuit to the load.

• B.

Induce DC into the external circuit.

• C.

Rectify the input.

• D.

Change alternating current (AC) voltage to DC voltage.

• 18.
In which form does an inductor store energy as an electromagnetic device?
• A.

Heat.

• B.

Resistance.

• C.

Magnetic field.

• D.

Electrostatic field.

• 19.
(207) When direct current is applied to an inductor reaches maximum, and is steady, the magnetic field around the inductor will.
• A.

Collapse.

• B.

Stop expanding.

• C.

Start to decrease slowly.

• D.

Continue to expand slowly.

• 20.
(207) The process by which a current, or voltage, change in one coil produces a varying current in another coil is called
• A.

Inductance.

• B.

Self-induction.

• C.

Mutual induction.

• D.

Inductive reactance.

• 21.
(208) A step-up transformer has this many turns of a wire in the secondary windings over the primary windings.
• A.

Equal.

• B.

Less.

• C.

More.

• D.

None.

• 22.
(209) Basically, a relay is an electrically operated
• A.

Meter.

• B.

Motor.

• C.

Switch.

• D.

Safety device.

• 23.
(209) Once energized, a relay requires a second coil to be energized before the contacts will return to their original positions. This is called a
• A.

Locking relay.

• B.

Latching relay.

• C.

Timing relay.

• D.

Tripping relay.

• 24.
(210) A capacitor stores energy in the form of
• A.

Heat.

• B.

Resistance.

• C.

A magnetic field.

• D.

An electrostatic field.

• 25.
(210) In a capacitor, the dielectric is also known as the
• A.

Outer case.

• B. Back to top