U4 C3/C4 Test Review (Focus:C3)

Front

What do circuit breakers and fuses protect?

Back

Devices from overheating.

Front

Which component provides resistance in an electric circuit?

Back

Light bulb.

Front

What is an ammeter used to measure?

Back

Current.

Front

What happens to the circuit if one bulb is removed in a series circuit?

Back

The circuit may break, causing all bulbs to go out.

Front

What is the function of a battery in a circuit?

Back

To provide electrical energy.

Front

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

Back

To open or close the circuit.

Front

What is the unit of electric current?

Back

Ampere (A).

Front

What is the difference between series and parallel circuits?

Back

In series circuits, components are connected end-to-end; in parallel circuits, components are connected across common points.

Front

What is resistance in an electric circuit?

Back

The opposition to the flow of electric current.

Front

What is Ohm's Law?

Back

Voltage = Current x Resistance (V = I x R).