Only certain materials are attracted to magnets.

A core is a magnetic material in the center of the coil of an electromagnet.

A special fluid that is magnetic is called a ferrofluid.

If the magnetic field lines are closer together this shows themagnetic field is weaker.

The MCB melts creating a gap in the circuit.

Hard magnetic materials are difficult to magnetize but keeps its magnetism.

A steel is a hard magnetic material.

The Earth’s magnetic field is not the same as that of a big bar magnet.

The magnetic field of an electromagnet is only produced whenthe current is flowing the wire.

A permanent magnet is a magnet that has its own magnetic field.

A magnet has four poles.

With a magnet you can make something move without even touching it.

There is no force on a magnetic field.

The Earth’s magnetic field keep flipping.

A south pole and a north pole of a magnet will_____

A 5A circuit breaker protects the____

An object that emits a magnetic field is called a ____

Electromagnetic switches that protect the circuits in the home are called ____

_____are automatic switches that work like fuses

____ are lines from the N pole to the S pole of a magnet

A _____ is conducted before they can be published other scientists check their results

A north pole and a north pole of a magnet will____

When an iron core is placed inside the coil, magnetic field gets_____

____ tells you how much energy is transferred per second

A ____ acts like a switch to turn on circuits that can be dangerous such as an x-ray machine.

The uses of electromagnets are ____