Magnetism & the Multimeter

Front

What is a material that responds to magnetic fields by becoming magnetic?

Back

Iron is one of these materials.

Front

What does a magnet do when it is brought near certain materials?

Back

It attracts them.

Front

What are the two poles of a magnet called?

Back

North pole and South pole.

Front

What type of current is required to form an electromagnet?

Back

An electric current.

Front

What is wrapped around an iron core to create an electromagnet?

Back

A coil of wire.

Front

What can be observed by sprinkling iron filings in a magnetic field?

Back

The shape of the magnetic field.

Front

What is the definition of magnetism?

Back

Magnetism is a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's magnetic field can be turned on and off by controlling the electric current.

Front

What is the role of the iron core in an electromagnet?

Back

The iron core enhances the magnetic field produced by the coil of wire.

Front

What happens to the magnetic field when the electric current in an electromagnet is increased?

Back

The strength of the magnetic field increases.