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WorksheetsElectricity - Circuits & Safety Features
Total questions: 20
Worksheet time: 15mins
Which type of circuit is shown in the diagram?
combination circuit
series circuit
parallel circuit
open circuit
What is meant by voltage?
rate of flow of electric charges
opposes flow of current
energy needed to move one unit of electric charge between 2 points
Which circuit below would be described as a "closed" circuit?
Which of the following instruments is used to measure current?
A
B
C
D
This is the circuit symbol of a
fuse
fixed resistor
variable resistor
buzzer
Which type of circuit is shown in the diagram?
parallel circuit
open circuit
combination circuit
series circuit
in which circuit will the light bulb be the brightest?
1
2
3
All has bulbs with the same brightness
When one light bulb is broken, all the other light bulbs will not light up.
In which of the following circuit will this happen?
What can be the danger caused by the action shown in the diagram? (can be more than one answer)
electrical fire
overheating of cables
electric shock
insulation of wires become damaged
How will you get the ammeter reading at A1?
sum of A2 + A4
sum of A2 + A3
sum of A3 + A4
sum of A2 + A3 + A4
What is the current reading on ammeter P?
0.5 A
1.5 A
2.0 A
2.5 A
All three resistors have the equal resistance.
What is the voltage reading at V?
1V
2V
3V
6V
E.m.f is another word for voltage of a dry cell.
What is the e.m.f. of the cell?
1.0 V
2.0 V
4.0 V
6.0 V
The circuit is set up using identical cells and bulbs.
What is the value of A5?
3 A
6 A
12 A
18 A
What is the voltage reading at V1?
3 V
6 V
8 V
12 V
What is the voltage reading on voltmeter Q?
0.5 V
1.0 V
1.5 V
2.0 V
The wire in a fuse will melt when the
current is larger than the fuse rating
current is smaller than the fuse rating
voltage is too large
voltage is too small
What is a suitable fuse rating for a washing machine using 6 A of current?
1 A
5 A
6 A
10 A
What is missing in the 3-pin plug?
Live wire
Earth wire
Neutral wire
Fuse
How does a circuit breaker works?
Circuit breaker will cause the current to flow from live wire to earth.
Circuit breaker will melt when the current is too large.
Circuit breaker will 'trip' and cut off electricity supply when the current is too small.
Circuit breaker will 'trip' and cut off electricity supply when the current is too large.
