Electromagnetism

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a coil of wire, often wrapped around a core of ferromagnetic material.

Front

What materials are good conductors of electricity?

Back

Good conductors of electricity include metals like copper, silver, and aluminum.

Front

What is the effect of adding more wire coils to an electromagnet?

Back

Adding more wire coils to an electromagnet increases its strength.

Front

What happens when you bring the north pole of one magnet close to the south pole of another magnet?

Back

They will attract each other.

Front

What is the relationship between electric charges?

Back

Particles with opposite charges attract each other, while particles with the same (or like) charges repel each other.

Front

What is a good example of a non-conductor?

Back

Plastic is a good example of a non-conductor of electricity.

Front

How can you make an electromagnet stronger?

Back

You can make an electromagnet stronger by adding more wire coils and/or batteries.

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all of them. In a parallel circuit, components are connected across common points, so the voltage is the same across each component.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be felt.

Front

What is the role of a core in an electromagnet?

Back

The core, usually made of iron, enhances the magnetic field created by the coil of wire.