Electromagnetism

Question 1

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

Revolt · Accepted Answer

conductor.

Question 2

Dante drew a diagram to show how a wire uses the magnetic field of a magnet to induce an electric current.

Revolt · Accepted Answer

He can connect the wire to both ends of the ammeter.

Question 3

Maya sets up two experiments as shown.

Revolt · Accepted Answer

How does the thickness of the wire affect the strength of an electromagnet?

Question 4

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?

Revolt · Accepted Answer

Magnetism surrounding the wire draws the needle toward the wire.

Question 5

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

Revolt · Accepted Answer

adding more coils to the wire

Question 6

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

Revolt · Accepted Answer

A copper colored coil with 5 turns.

Question 7

How does adding an iron bar to a solenoid affect the magnetic field of the electromagnet?

Revolt · Accepted Answer

It increases the magnetic field’s strength.

Question 8

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

Revolt · Accepted Answer

moving the wire downward through the magnetic field

Question 9

Which is produced around a wire when an electrical current is in the wire?

Revolt · Accepted Answer

magnetic field

Question 10

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

Revolt · Accepted Answer

He reduced the number of loops in the wire.

Electromagnetism Answers

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