Physics 1.11: 3.3 Magnetism and Electromagnetism

Multiple Choice

The strength of a magnet's force ______ as you get closer to it.

• Stays the same

• Increases

• Decreases

Multiple Choice

Every magnet has a ______ pole and a south pole.

• North

• East

• West

Multiple Choice

Magnetic Field lines always point from _____ to _____.

• North to south

• South to north

Multiple Choice

Which sides of two magnets will stick together?

• The two north poles

• The north and south poles

• The two south poles

Multiple Choice

If you place a tiny bar magnet at point X in the magnetic field pictured, how will it align itself?

• A

• B

• C

• D

Multiple Select

Which of the following will increase the strength of an electromagnet? (Check all that apply.)

• An increase in the number of wire coils

• A decrease in the number of wire coils

• An increase in voltage

• A decrease in voltage

Multiple Choice

In an electromagnet, the production of an electric field generates a(n)______.

• Electromagnetic field

• Electric current

• Magnetic field