T3L3 Flashcard

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that becomes magnetized when an electric current flows through it.

Front

What is required for an electromagnet to work?

Back

Electricity must flow through the wire to create a magnetic field.

Front

What happens to the magnetic field when the electric current is increased?

Back

The magnetic field gets stronger.

Front

What happens to the magnetic field if the battery is removed from an electromagnet?

Back

The magnetic field disappears.

Front

How can you increase the strength of an electromagnet?

Back

By adding more loops of wire around the core.

Front

What effect does increasing the current have on an electromagnet?

Back

It strengthens the magnetic field.

Front

What is the core of an electromagnet?

Back

The core is the material (often iron) around which the wire is wound to enhance the magnetic field.

Front

Can an electromagnet be turned off?

Back

Yes, by stopping the flow of electricity, the electromagnet can be turned off.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet is always magnetic, while an electromagnet only works when electricity flows.

Front

What is the role of wire loops in an electromagnet?

Back

Wire loops create a stronger magnetic field when electricity flows through them.