Electricity, Magnetism, And Motion Part 1: Question Preview (ID: 18212)

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Which is NOT a part of an electric motor?
a) armature
b) brushes
c) commutator
d) slip ring

The relationship between electricity and magnetism is called
a) current.
b) electromagnetism.
c) a solenoid.
d) voltage.

The two ends of a solenoid act like
a) a circuit.
b) electrons.
c) a compass needle.
d) poles.

What is used to turn the pointer of a galvanometer?
a) a crank
b) an electric current
c) a battery
d) a bar magnet

Which of the following does NOT involve the use of an electromagnet?
a) lifting heavy metal objects with a crane at a junkyard
b) picking up paperclips using a bar magnet
c) recording a television show onto a videotape
d) recording a song onto an audiotape

An alternating current consists of charges that
a) turn on and off repeatedly.
b) move back and forth in a circuit.
c) flow in one direction in some devices and change direction in others.
d) flow in one direction only.

A solenoid with a ferromagnetic core is called a(n)
a) electromagnet.
b) magnetic pole.
c) lodestone.
d) temporary magnet.

A device that increases or decreases voltage is called a(n)
a) transformer.
b) turbine.
c) generator.
d) alternator.

Electric current from a generating plant is
a) alternating current transmitted at low voltages, but usually used at high voltages.
b) direct current transmitted at low voltages, but usually used at high voltages.
c) direct current transmitted at high voltages, but usually used at low voltages.
d) alternating current transmitted at high voltages, but usually used at low voltages.

The process of generating an electric current from the motion of a conductor in a magnetic field is
a) motion.
b) conduction.
c) magnetism.
d) induction.

A DC generator is the same as a(n)
a) armature.
b) electric current.
c) AC generator.
d) electric motor.

What is one difference between a galvanometer and an electric motor?
a) An electric motor causes something to move.
b) In an electric motor, the armature spins continuously.
c) A galvanometer uses an electric current.
d) An electric motor uses electrical energy.

Which type of energy is associated with electric currents?
a) geothermal energy
b) mechanical energy
c) electrical energy
d) magnetic energy

Which is NOT part of an AC generator?
a) slip ring
b) crank
c) commutator
d) armature

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