T3L3* Flashcard

Front

How does an electromagnet work?

Back

A current flows through a wire wrapped around a metal core, creating a magnetic field.

Front

What is the role of a battery in an electromagnet?

Back

It provides electricity to create the magnetic field.

Front

What happens if more loops of wire are added to an electromagnet?

Back

The magnetic field becomes stronger.

Front

What tool can show the direction of a magnetic field?

Back

A compass

Front

What happens if the electric current in an electromagnet increases?

Back

The magnetic field gets stronger.

Front

What happens when you turn off the battery in an electromagnet?

Back

The magnetic field disappears.

Front

Which material is best for the core of an electromagnet?

Back

Iron

Front

How can the strength of an electromagnet be increased?

Back

Add more loops of wire.

Front

What is one common use of electromagnets?

Back

In speakers