Circuits

Front

What happens to the bulbs in a series circuit if the circuit is broken?

Back

All bulbs will go out because the current cannot flow.

Front

What is a complete circuit?

Back

A complete circuit is a closed loop that allows electricity to flow uninterrupted.

Front

Why is copper commonly used in electrical wiring?

Back

Copper is used because it is an excellent conductor of electricity.

Front

In a circuit with a battery, two light bulbs, and a switch, what is likely to happen if the switch is open?

Back

Light bulb 1 will be on, but light bulb 2 will be off.

Front

What is the role of an insulator in a circuit?

Back

An insulator prevents the flow of electricity, protecting the circuit and users.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, while in a parallel circuit, components are connected across common points.

Front

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

Back

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

Front

What is electrical resistance?

Back

Electrical resistance is the opposition to the flow of electric current, measured in ohms.

Front

How does adding more bulbs in a series circuit affect the brightness of each bulb?

Back

Adding more bulbs decreases the brightness of each bulb because the total resistance increases.

Front

What is the purpose of a fuse in an electrical circuit?

Back

A fuse protects the circuit by breaking the connection if the current exceeds a certain level.