Understanding Electromagnets and Their Properties

Front

What material is commonly used as the core when making a simple electromagnet?

Back

Iron nail

Front

Which of the following is NOT required to make a basic electromagnet? Options: Insulated wire, Battery, Iron rod, Light bulb

Back

Light bulb

Front

What happens to the iron core when electric current flows through the wire wrapped around it?

Back

It becomes a magnet

Front

What shape do the magnetic field lines form around a current-carrying straight wire?

Back

Concentric circles

Front

The direction of the magnetic field around a wire depends on:

Back

The direction of the current

Front

Which of the following will NOT increase the strength of an electromagnet?

• Increasing the number of coils
• Increasing the electric current
• Using a soft iron core
• Using a plastic core

Back

Using a plastic core

Front

How can you make an electromagnet stronger?

Back

Increase the electric current

Front

Which property is unique to electromagnets compared to permanent magnets?

Back

They can be turned on and off

Front

What must be present for an electromagnet to work?

Back

A flowing electric current

Front

Which of the following materials can be attracted by an electromagnet? Aluminium, Iron, Plastic, Glass

Back

Iron