7.2.1 - Electromagnetism

What is produced when current flows through a conducting wire?

A magnetic field is produced around the wire.

What determines the strength of the magnetic field around a current-carrying wire?

• The magnitude of the current flowing through the wire.

• The distance from the wire.

What is a solenoid?

A coil of wire which when current passes through creates a strong magnetic field.

Describe the magnetic field found inside a solenoid.

Strong and uniform.

What is an electromagnet?

• A solenoid with an added iron core.

• Adding the iron core increases the strength of the magnetic field.