Magnets & Electromagnets

Front

What type of magnets must have an electrical current running through them?

Back

Electromagnets.

Front

What are the ends of a magnet called?

Back

North and South poles.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

What kind of magnet can be turned on and off?

Back

Electromagnet.

Front

What materials are needed to make an electromagnet?

Back

Wire, battery, and iron ore (nail).

Front

What is the principle behind electromagnetism?

Back

The principle that an electric current produces a magnetic field.

Front

How can the strength of an electromagnet be increased?

Back

By increasing the number of coils of wire, increasing the current, or using a stronger core material.

Front

What is the difference between permanent magnets and electromagnets?

Back

Permanent magnets produce a constant magnetic field, while electromagnets can be turned on and off and their strength can be varied.

Front

What is a common application of electromagnets?

Back

Used in electric motors, generators, and magnetic locks.

Front

What happens to an electromagnet when the electrical current is turned off?

Back

It loses its magnetism.