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WorksheetsFuses
Total questions: 16
Worksheet time: 11mins
Electric current is measured in
kWh
Amps
Ohms
Watts
Electric power is measured in
kWh
Amps
Ohms
Watts
The rate at which electric energy is used is called
Electric energy
Electric power
Voltage difference
Electric current
What is the power of a resistor which has 10A flowing through it and a voltage of 50V
500W
5W
0.2W
5000W
How many watts would a cell phone charger be rated for if it was supplying 0.5 A at 5 V?
2.5W
10W
0.1W
0.15W
This is the circuit symbol of a
resistor
battery
fuse
switch
an earth wire
If a bulb uses 10A, which fuse would be best?
10A
13A
8A
5A
A switch that automatically opens if the current in the circuit is too high
parallel circuit
circuit breaker
series circuit
load
Why are damp conditions dangerous around electricity? Tick all that apply.
Water is a conductor
You could get electrocuted
It can damage the insulation
It could cause the fuse to blow
Why are overheating cables a hazard?
Could cause a fire
Could cause a electrocution
Could cause a shortcircuit
Could melt the fuse
Fuse/circuit breaker should be set to a current value just above the normal operating current. True or false
True
False
