Electric and Magnetic Forces

Front

A compass needle shows us the magnetic field of

Back

Earth

Front

Earth has a magnetic field that is similar to a bar magnet's magnetic field.

Back

true

Front

Earth's magnetic South Pole is near Earth's geographic North Pole.

Back

true

Front

Why do electromagnets create magnetic fields?

Back

They have moving particles with electric charge.

Front

An electromagnet is a magnet that

Back

its strength can be varied and turned on and off

Front

Why are electromagnets useful in industry such as a junk yard?

Back

They can be turned off and on.

Front

Which electromagnet is stronger? Options: A, B

Back

B

Front

Which electromagnet is stronger? Options: A, B

Back

B

Front

Which electromagnet is stronger? Options: A, B

Back

A

Front

Which electromagnet is stronger? Options: A, B

Back

A