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- 1. Multiple Choice
Select the correct statements about the live wire in a plug.
It is brown
It is blue
It has green and yellow stripes
It is at 0 V.
It is at 230 V.
- 2. Multiple Choice
Select the correct statements about the earth wire in a plug.
It is brown
It is blue
It has green and yellow stripes
It is at 0 V.
It is at 230 V.
- 3. Multiple Choice
Select the correct statements about the neutral wire in a plug.
It is brown
It is blue
It has green and yellow stripes
It is at 0 V.
It is at 230 V.
- 4. Multiple Choice
The neutral wire carries the current...
towards the appliance
out of the appliance
- 5. Fill in the Blank
The __________ wire only carries a current when there is a fault.
- 6. Fill in the Blank
In a plug, the fuse is connected to the __________ wire.
- 7. Multiple Choice
When the current through a fuse gets too high, the wire inside the fuse will...
create a spark
melt
sound an alarm
do nothing
- 8. Multiple Choice
The fuse used in an electric appliance should be rated __________ than the operating current.
higher
lower
- 9. Fill in the Blank
An electrician has a 3 A, a 5 A, and a 10 A fuse. He is replacing a broken fuse in an appliance.
The appliance has a power rating of 1000 W and it is plugged into the mains supply, at 230 V. Determine the fuse that should be used in the appliance.
- 10. Multiple Choice
Select the correct advantages of circuit breakers over fuses.
Circuit breakers can be reset.
Circuit breakers are cheaper.
Circuit breakers stop the current faster.
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