WorksheetsYear 9 Electricity Test - Master Copy
Total questions: 23
Worksheet time: 36mins
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
8. Which circuit diagram symbol is not shown in this image?
Lamp
Voltmeter
Ammeter
Switch
Resistor
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
The reading on the ammeter in the circuit is 1.0 A.
A second ammeter is connected in the circuit. It also reads 1.0 A.
At which labelled point is it connected?
A
B
C
D
When the switch in this circuit is closed, Vs reads 6V. What will the voltage reading be on Voltmeter 1 and Voltmeter 2?
Voltmeter 1 = 3V, Voltmeter 2 = 3V
Voltmeter 1 = 6V, Voltmeter 2 = 9V
Voltmeter 1 = 6V, Voltmeter 2 = 6V
Voltmeter 1 = 0V, Voltmeter 2 = 0V
Calculate the potential difference across the battery in the circuit below. Show all stages of working out and include units in your answer.
A slide is made of plastic. A child becomes electrically charged when he goes down the slide. Explain why.
Draw a circuit that has a lamp, an ammeter a switch and a cell.
A student wants to check the voltage across the cell in her circuit. Using the circuit diagram symbols, add a voltmeter to this circuit in the appropriate place.
Which device is used to measure the current flowing through a circuit?
Resistor
Ammeter
Switch
Voltmeter
What is the unit of potential difference?
Volt
Ohm
Ampere
Watt
Using Ohm's law (V=IR), calculate the current in a simple circuit with a 10V battery and a lamp with a resistance of 5Ω.
50A
0.5A
2.5A
2A
In a parallel circuit, the voltage across each branch is the same, the current is s (a) between the branches, and if one globe fails, the other globes stay on.
Question:
Bob and Jane are setting up their Christmas tree lights. Bob insists on wiring the lights in a series circuit because he says it's simple to set up and uses less wire. Jane disagrees and believes a parallel circuit is better, because it’s more reliable.
Who do you agree with and why?
In your answer, you should explain:
What happens in a series circuit when one lamp blows, what happens in a parallel circuit when one lamp blows and what happens to the brightness of lamps when added in series vs in parallel.
