Electricity & Electromagnetism Quiz Review

How do the two poles of a magnet interact with each other?

• Attraction and Repulsion

• Fusion and Fission

• Expansion and Contraction

• Conduction and Convection

Moving a magnet farther away from a metal can result in a decrease in the strength of the magnet.

• True

• False

Which of the following have a substance that will create a temporary magnet?

• Brass Key

• Nickel Coin

• Soft Iron Nail

• Wooden Spoon

Why does a compass needle always point north?

• Earth's magnetic field is aligned with the geographic north.

• Due to the gravitational pull of the North Pole.

• It is attracted to the magnetic field of the Sun.

• Compass needles are naturally inclined to point north.

Rubber can be picked up easily with a bar magnet.

• True

• False

If two charges repel each other, the two charges must be. Mark only one oval.

• Positive and negative

• Positive and neutral

• Negative and negative

• Other:

Charging by (a)   occurs when electrons are transferred from one object to another by direct conduct. Mark only one oval.

• Reduction

• Induction

• Conduction

• Friction

What do the lines around this magnet represent?

• North Pole

• South Pole

• Magnetic Declination

• Magnetic Field

This picture is an example of an: Mark only one oval.

• Electric circuit

• Electromagnet

• Electric nail

• Electric power cell

One way to make an electromagnet stronger is to

• use less wire

• have fewer wire coils around the nail

• use a plastic core

• have more wire coils around the nail.