Circuits & Electromagnets

Front

What is an electromagnet?

Back

An electromagnet is a temporary magnet created by placing a piece of iron inside a current-carrying coil of wire.

Front

How does the number of loops in a wire affect the strength of an electromagnet?

Back

The more loops of wire there are, the stronger the magnetic field produced by the electromagnet.

Front

What happens to the strength of an electromagnet when the current increases?

Back

The stronger the current, the stronger the magnetic field of the electromagnet.

Front

What do electric currents produce?

Back

Electric currents produce magnetic fields.

Front

Do electromagnets require a power source?

Back

Yes, electromagnets need a power source to function.

Front

What does it mean if a circuit is 'broken'?

Back

A circuit is broken if the switch is open, preventing current from flowing.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit by opening or closing the circuit.

Front

What materials are typically used to create an electromagnet?

Back

Electromagnets are typically made using iron or steel as the core material.

Front

What is the relationship between electricity and magnetism?

Back

Electricity can create magnetism; this is the principle behind electromagnets.

Front

Can an electromagnet be turned on and off?

Back

Yes, an electromagnet can be turned on and off by controlling the electric current.