Electromagnetism

What is electromagnetism?

A fundamental branch of physics that studies the interactions between electric charges and magnetic fields.

What does magnetism involve?

The study of magnetic fields and their interactions with materials.

What happens when like poles of magnets are brought close together?

Like poles repel each other.

What happens when unlike poles of magnets are brought together?

Unlike poles attract each other.

How are electromagnets created?

By running an electric current through a coil of wire, generating a magnetic field.

What are two ways to increase the strength of an electromagnet?

Increasing the number of coils and increasing the current.

What core material is commonly used to enhance electromagnets?

Iron.

What is the function of electric motors?

To convert electrical energy into mechanical energy using magnetic fields.

How do generators work?

They convert mechanical energy into electrical energy based on electromagnetic induction.

What is the purpose of transformers?

To change the voltage of alternating current (AC) in power distribution.

What is an electric field?

A field around a charged particle that exerts a force on other charged particles.