Electromagnets, Motors and Generators

Front

What surrounds every magnet?

Back

A magnetic field.

Front

What is the transfer of energy in a generator?

Back

Mechanical to Electrical.

Front

What happens if you break a bar magnet into 8 pieces?

Back

You would have 8 complete magnets.

Front

Why does a simple electric motor work?

Back

The current from the battery induces a magnetic field in the copper loop, turning it into an electromagnet that repels from/attracts to the permanent magnet.

Front

What surrounds a wire when electric current is flowing through it?

Back

A magnetic field.

Front

Define an electromagnet.

Back

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

Front

What is the principle behind electric motors?

Back

They convert electrical energy into mechanical energy using magnetic fields.

Front

What is the role of a commutator in a motor?

Back

It reverses the direction of current flow, ensuring continuous rotation.

Front

Explain the relationship between electricity and magnetism.

Back

Electricity can create a magnetic field, and a changing magnetic field can induce an electric current.

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.