Electromagnetism

Front

What is Electromagnetic Induction?

Back

The use of the movement of magnets around a coil of wire to create an electrical current through the wire.

Front

What happens when a wire is wound into a coil around an iron core in an electromagnet?

Back

The magnetic field becomes stronger.

Front

Why is magnetic induction important?

Back

Electromagnets are very versatile, every electric motor uses induction, and it's an easy way to produce electricity.

Front

What happens when a bar magnet is moved in and out of a coil of copper wire?

Back

Electric current will flow through the wire.

Front

What is the relationship between current and magnetic strength?

Back

As current increases, magnetic strength increases.

Front

Define Electromagnetism.

Back

The branch of physics that deals with the interaction between electric charges and magnetic fields.

Front

What is a magnetic field?

Back

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What is Faraday's Law of Electromagnetic Induction?

Back

The induced electromotive force in any closed circuit is equal to the rate of change of the magnetic flux through the circuit.

Front

What is a solenoid?

Back

A coil of wire that produces a magnetic field when carrying an electric current.

Front

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

Back

It enhances the magnetic field produced by the coil of wire.