Understanding Electromagnets

A permanent magnet that retains its magnetism

A type of magnet that is created by an electric current

A magnet that is made from natural materials

A magnet that does not require electricity to function

A wooden core

A copper wire coil

A plastic casing

A rubber band

The coil is used to store energy.

The coil is used to conduct electricity and create a magnetic field.

The coil is used to insulate the magnet.

The coil is used to cool down the magnet.

The core material does not affect the strength of an electromagnet.

A non-magnetic core increases the strength of an electromagnet.

A magnetic core, like iron, increases the strength of an electromagnet.

A plastic core is the best for increasing strength.

It becomes a permanent magnet.

It loses its magnetism.

It becomes stronger.

It changes its polarity.

In refrigerators to keep the door closed

In electric bells to produce sound

In solar panels to generate electricity

In wind turbines to capture wind energy

MRI machines in hospitals

Electric motors

Compasses

Cranes for lifting heavy metal objects

By decreasing the number of turns in the coil

By using a non-magnetic core

By increasing the electric current

By using a thinner wire

The color of the wire

The number of turns in the coil

The shape of the core

The type of battery used

It decreases the strength of the electromagnet.

It has no effect on the electromagnet.

It increases the strength of the electromagnet.

It changes the polarity of the electromagnet.