Magnets & Magnetism

Front

What will happen when these magnets are brought close together?

Back

They will repel each other.

Front

How is Earth's magnetic field similar to that of a magnet?

Back

It has north and south poles

Front

As the distance between two magnets increases (they get farther apart), the force between them:

Back

Decreases

Front

The strongest part of a magnet is...

Back

the poles.

Front

What makes an electromagnet stronger? greater number of loops, smaller number of loops, decreasing the current, decreasing the voltage

Back

greater number of loops

Front

Why will a magnet pick up a nail but not a penny?

Back

contains iron.

Front

A type of magnet that has temporary magnetic effect when electric current flows through it.

Back

Electromagnet

Front

How can a simple electromagnet be made stronger?

Back

Add more coils of wire to the nail.

Front

The lines on this image are called...

Back

magnetic field lines

Front

How can you make an electromagnet stronger?

Back

Increase the current through the wire, make the iron core bigger, increase the number of loops around the core.