Lesson 3-4 Circuits & Electromagnetism

Front

What is a closed circuit?

Back

A closed circuit is when all components are connected, allowing electricity to flow and power devices like light bulbs.

Front

What is electromagnetism?

Back

Electromagnetism is the interaction between electric charges and magnets.

Front

What device can open or close a circuit?

Back

A switch is a device that can open or close a circuit.

Front

What type of material allows current to flow and lights a bulb?

Back

A conductive material allows current to flow and lights a bulb.

Front

Are magnetic fields around current-carrying wires strongest or weakest closest to the wires?

Back

Magnetic fields around current-carrying wires are strongest closest to the wires.

Front

What is the role of a battery in a circuit?

Back

A battery provides the electrical energy needed to power a circuit.

Front

What is a conductor?

Back

A conductor is a material that allows electricity to flow through it easily.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it easily.

Front

What happens when a switch is open?

Back

When a switch is open, the circuit is incomplete, and electricity cannot flow.

Front

What is the function of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit.