Year 9 Exam Revision: Electricity

In a circuit diagram, this symbol represents a

• switch

• multimeter

• battery

• globe

Which light globe(s) would never light up?

• A

• B,C,D

• A,B,C,D

• None

Voltage is the measure of the...

• difference in electrical energy between 2 parts of a circuit

• amount of electric charge that flows through a circuit

What is used to measure electric current?

• Voltmeter

• Ammeter

• Wattmeter

• pH meter

What type of circuit is this?

• Series

• Parallel

• Simple

In a series circuit, how is the brightness of a light globe affected when another globe is connected?

• It gets brighter

• It stays the same

• It gets dimmer

• It goes out

Why are Christmas lights wired in parallel?

• It is cheaper to make

• You can make longer strands

• It uses less electricity

• If a light breaks, the others keep working

If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?

• Voltage will increase

• Voltage will decrease

• Voltage will stay the same

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

• Current will increase

• Current will decrease

• Current will stay the same

The unit for current is the 

• Volt
• Ohm
• Electron
• Amp