15.2 Electricity and Magnetism

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows electricity to flow, enabling devices like lights to turn on.

Front

What is an open circuit?

Back

An open circuit is an incomplete electrical loop that prevents electricity from flowing, causing devices to not function.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it easily, such as plastic or rubber.

Front

What is a conductor?

Back

A conductor is a material that allows electricity to flow through it easily, such as copper or aluminum.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit by opening (stopping flow) or closing (allowing flow) the circuit.

Front

What are energy sources?

Back

Energy sources are materials or devices that provide energy, such as batteries and power plants.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet created by electric current, which can be turned on and off.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of how much a material opposes the flow of electric current, affecting how much current flows.

Front

What happens when a circuit is closed?

Back

When a circuit is closed, electricity flows through the circuit, powering devices like lights or motors.

Front

What happens when a circuit is open?

Back

When a circuit is open, electricity cannot flow, and devices connected to the circuit do not work.