Year 9 Electricity Test - Master Copy

1. What is the flow of charged particles called?

• Potential Difference

• Current

• Static Electricity

• Resistance

2. In what units is current measured?

• Volts

• Amps

• Coulombs

• Meters per second

3. What is potential difference also called?

• Current

• Voltage

• Series

• Resistance

4. What causes a balloon to stick to a wall after being rubbed on your hair?

• The balloon gains heat energy

• The balloon becomes magnetized

• The balloon becomes electrically charged and attracts opposite charges on the wall

• The balloon absorbs moisture from the air

5. The switch is closed but after 1 minute Lamp A breaks. What happens to the other bulbs?

• They stay on

• They turn off

• They get brighter

• They get dimmer

6. In a parallel circuit with 3 bulbs, another bulb is added in parallel. What happens to the brightness of the bulbs?

• They get dimmer

• They get brighter

• They stay the same

• They all turn off as electricity cannot flow

7. What does voltage measure in a circuit?

• The amount of current flowing
• The resistance of a wire
• The energy carried by each charge
• The number of electrons in the circuit

8. Which circuit diagram symbol is not shown in this image?

• Lamp

• Voltmeter

• Ammeter

• Switch

• Resistor

9.

• A
• B
• C
• D

The diagram shows an electrical circuit.

Between which two points must a voltmeter be connected to find the potential difference across the bell?

• A) L and M

• B) M and N

• C) N and O

• D) O and P