Electricity & Magnetism

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 typically consists of a coil of wire (solenoid) wrapped around a core material, such as iron.

Front

What is the role of the solenoid in an electromagnet?

Back

The solenoid is the coil of wire that creates a magnetic field when an electric current passes through it. It is essential for the functioning of the electromagnet.

Front

What is the core of an electromagnet?

Back

The core of an electromagnet is usually made of ferromagnetic material (like iron) that enhances the magnetic field created by the solenoid.

Front

What does a battery do in an electric circuit?

Back

A battery provides the electrical energy needed to create an electric current in a circuit.

Front

What is a magnetic field?

Back

A magnetic field is an invisible area around a magnet or a current-carrying wire where magnetic forces can be detected.

Front

What are electrons?

Back

Electrons are negatively charged particles that can flow in an electric current or build up on surfaces.

Front

What is electric current?

Back

Electric current is the flow of electric charge, typically carried by moving electrons in a conductor.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field without the need for electricity, while an electromagnet's magnetic field can be turned on or off by controlling the electric current.

Front

What is the function of a switch in an electric circuit?

Back

A switch is a device that can open or close an electric circuit, allowing or stopping the flow of current.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load.