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WorksheetsElectricity
Total questions: 25
Worksheet time: 40mins
What is the component labelled C
Battery
Buzzer
Light bulb
Switch
Electricity can only flow if the circuit is a/an _____________ loop.
opened
closed
small
large
What is the correct symbol for a LDR (light dependent resistor)?
What is the correct symbol for a thermistor?
What symbol?
battery
lamp
fuse
resistor
ammeter
What symbol?
switch (closed)
resistor
LED
fuse
cell
Calculate the power of an electric kettle connected to a 230V mains power supply. The kettle draws a current of 10 Amps
23W
2300W
0.44W
Power is the rate at which work is done
True
False
Current describes . . . .
The energy to push electrons through a circuit
How fast electrons move through a circuit
The slowing down of electrons
Voltage describes . . . .
The energy to push electrons through a circuit
How fast electrons move through a circuit
The slowing down of electrons
Calculate the power of an appliance that uses 1000 joules of energy in 5 seconds.
100 W
200 W
300 W
400 W
Power, potential difference and current are correctly related by which equation?
P = I x V
P = 2I x V
P = I⁄V
P = I⁄2V
What voltage is needed to cause a 50A current flow through a 10Ω resistor?
15V
500V
500 kV
0.2V
