Module 22 Test: Electricity and Magnetism ConcPhy

The source of all magnetism is

• tiny pieces of iron.

• none of the above.

• moving electric charges.

• ferromagnetic materials.

Moving electric charges will interact with

• an electric field.

• both A and B

• a magnetic field.

• none of the above

Surrounding every moving electron is

• an electric field.

• both A and B

• none of the above

• a magnetic field.

Magnetism is produced by the motion of electrons as they

• none of the above

• move around the nucleus.

• both A and B

• spin on their axes.

If the north pole of one magnet is brought near the south pole of another magnet, the poles will

• repel each other.

• not interact with each other at all.

• attract each other.

If you break a bar magnet in half, each half

• contains one magnetic pole.

• becomes unmagnetized.

• becomes a bar magnet with two poles.

If you put a small compass in a magnetic field, the compass will

• seek electrical charge concentrations.

• swing randomly.

• line up in a direction parallel to the magnetic field lines. atmosphere

Magnetic field strength is

• strongest close to a magnet.

• strongest far from a magnet.

• constant everywhere around a magnet.

Magnetic domains are

• blocks of material.

• regions of atoms magnetically aligned.

• clusters of atoms randomly aligned.

• regions that may or may not be magnetized.

Permanent magnets can be made by

• all of the above

• none of the above

• placing a piece of iron near a strong electromagnet.

• stroking material containing iron with a magnet.

• placing a piece of iron in a strong magnetic field.