WorksheetsElectricity GCSE (circuits)
Total questions: 20
Worksheet time: 19mins
When the light intensity on an LDR increases then its resistance...
Stays the same
Increases
Decreases
How should an ammeter be connected to measure the current through a bulb?
In series with the bulb.
In parallel with the bulb.
It doesn't matter, you'll always get the same reading.
A student measures the current across a component as the voltage is increased. What is this component most likely to be?
A commercial resistor.
A Thermistor.
An LDR.
A light bulb.
A wire in a water bath.
As the gradient of the graph line decreases this shows that the resistance is...
decreasing.
staying constant.
increasing.
the line has nothing to do with resistance.
This is the symbol for a...
Motor
Ammeter
Bulb
Voltmeter
This is the symbol for a...
Light Dependent Resistor
Light Emitting Diode
Thermistor
Cell
This is the symbol for a...
Fuse
Wire
Light Emitting Diode
Heater
Calculate the voltage across the fixed resistor.
0.3 V
3 V
4.8 V
12 V
Which resistor will prevent the most current flow?
1 Ω
100 Ω
1000 Ω
0.5 Ω
What size resistor would produce a 3A current flow if the voltage was 12V?
1 Ohm
3 Ohms
4 Ohms
12 Ohms
How do you calculate current from voltage and resistance?
Current = voltage x resistance
Current = resistance x power
Current = voltage ÷ resistance
Current = resistance ÷ voltage
As the diameter of a wire increases, the resistance of the wire will
increase
decrease
stay the same
As the length of a wire increases, the resistance of the wire will
increase
decrease
stay the same
If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance
12Ω
6Ω
24Ω
0.167Ω
