Electromagnetism Answers
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The diagram shows a setup for inducing a current in a wire.
A
making the wire thickerB
adding coils to the wireC
disconnecting the wire from one end of the ammeterD
moving the wire downward through the magnetic field2
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A compass needle normally points toward Earth’s magnetic pole, which is near the North Pole. Which best explains why the needle moves away from the pole when it comes close to a current-carrying wire?
A
Current within the wire weakens the magnetic force of the pole.B
Magnetism surrounding the wire weakens the magnetic force of the pole.C
Current within the wire draws the needle toward the wire.D
Magnetism surrounding the wire draws the needle toward the wire.3
What is the Compact Muon Solenoid used to study?
A
materials that give off harmful radiationB
the current produced by different types of magnetsC
different materials that conduct currentD
the particles emitted when atoms collide4
A current is induced in a wire by moving the wire through a magnetic field. Which is one factor that affects the direction of the current?
A
the direction in which the wire movesB
the thickness of the wireC
the direction of the needle on an ammeterD
the type of magnet5
Assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical wire?
A
straightening the wireB
changing the direction of the current flowC
adding more coils to the wireD
stopping the currentDid you find these answers helpful?
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