Circuits, electricity, and magnetism

Front

What happens to a light bulb when switch Q is opened?

Back

The light bulb goes out.

Front

What causes a compass needle to rotate when placed under a wire with electric current flowing from north to south?

Back

The compass needle rotates because of a magnetic force that acts on it.

Front

Why does an electric current flowing through a wire create a magnetic field?

Back

Because magnetic force is another aspect of electrical force.

Front

What is an example of a resistor in a circuit?

Back

A light bulb.

Front

What is one result of an electric current flowing in a wire?

Back

A magnetic field is created.

Front

What is the definition of electric current?

Back

Electric current is the flow of electric charge, typically measured in amperes.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electric current by opening or closing the circuit.

Front

What is the relationship between electricity and magnetism?

Back

Electricity and magnetism are interrelated; electric currents create magnetic fields.

Front

What is a conductor?

Back

A conductor is a material that allows electric current to flow easily, such as copper.