Magnetism

Which of the following will not attract or repel each other?

• two magnets 
• a magnet and a stationary charge
• a magnet and a current-carrying wire
• two current-carrying wires 

Generators can produce only alternating current.

• True
• False

A magnet moving back and forth in the center of a coil of wire produces a direct current in the wire.

• True
• False

At the geographic North Pole, a compass will point south.

• True
• False

Temperature does not have a strong effect on a ferromagnetic object.

• True
• False

Natural magnets, such as lodestones, display ferrimagnetism.

• True
• False

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

Magnets strongly attract all metals.

• True
• False

Liquid oxygen and gaseous oxygen display different magnetic properties.

• True
• False

The strongest magnets are made out of pure substances.

• True
• False