AnswersPBCSD_Grade_Forgiveness_2003310_Physical Science_S2_2022Lab: Newton's Laws of Motion

Electromagnetism Answers

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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.
2
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Assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical wire?

A
straightening the wire
B
changing the direction of the current flow
C
adding more coils to the wire
D
stopping the current
3

What is the term for producing a current by moving a wire through a magnetic field?

A
solenoid induction
B
flowing induction
C
electromagnetic induction
D
coiled induction
4

Maya sets up two experiments as shown.

Question illustration
A
How does the type of material used in the core affect the strength of an electromagnet?
B
How does the number of loops of wire affect the strength of an electromagnet?
C
How does the speed at which an iron bar is removed from wire loops affect the strength of an electromagnet?
D
How does the thickness of the wire affect the strength of an electromagnet?
5

The diagram shows a setup for inducing a current in a wire.

Question illustration
A
making the wire thicker
B
adding coils to the wire
C
disconnecting the wire from one end of the ammeter
D
moving the wire downward through the magnetic field
6

Which wire, when current flows through it, would be surrounded by the strongest magnetic field?

A
A thin copper colored bar.
Option A
B
A copper colored coil with 2 turns.
Option B
C
A copper colored coil with 5 turns.
Option C
D
A thick copper colored bar.
Option D
7

Juan makes an adjustment to an electromagnet that causes the electromagnet to lose some of its strength. What did Juan most likely do?

A
He reduced the number of loops in the wire.
B
He increased the number of loops in the wire.
C
He reduced the length of the wire.
D
He increased the length of the wire.
8

What is the Compact Muon Solenoid used to study?

A
materials that give off harmful radiation
B
the current produced by different types of magnets
C
different materials that conduct current
D
the particles emitted when atoms collide
9

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 moves
B
the thickness of the wire
C
the direction of the needle on an ammeter
D
the type of magnet
10

When a conductor is passed through a magnetic field, a current is induced in the ______.

A
area above the conductor.
B
magnetic field.
C
area above the magnetic field.
D
conductor.

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