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WorksheetsElectrical Safety
Total questions: 10
Worksheet time: 7mins
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.
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.
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.
The neutral wire carries the current...
towards the appliance
out of the appliance
The (a) wire only carries a current when there is a fault.
In a plug, the fuse is connected to the (a) wire.
When the current through a fuse gets too high, the wire inside the fuse will...
create a spark
melt
sound an alarm
do nothing
The fuse used in an electric appliance should be rated __________ than the operating current.
higher
lower
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.
(a)
Select the correct advantages of circuit breakers over fuses.
Circuit breakers can be reset.
Circuit breakers are cheaper.
Circuit breakers stop the current faster.
