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WorksheetsYr10 Physics Electrcial Safety DCSG
Total questions: 17
Worksheet time: 21mins
The primary function of a fuse is to
Open the circuit
Protect the appliance
Protect the line
Prevent excessive currents from flow through the circuit
The fuse rating is expressed in terms of
Current
Voltage
VAR
KVA
What colour is the live wire in a three pin plug?
brown
Blue
Green and yellow
What colour is the neutral wire in a three pin plug
brown
Blue
Green and yellow
What colour is the earth wire in a three pin plug
brown
Blue
Green and yellow
Which label points to the Fuse on the diagram?
C
D
E
F
Which label points to the Earth Wire on the diagram ?
A
B
C
D
What property of fuse wire enables it to act as a safety feature?
it's Boiling point
it's strength
it's Melting point
it's Texture
it's flexibility
The fuse in a circuit 'blows' when the fuse wire....
set alight
melts
explodes
cracks
falls out
A device that contains a thin strip of metal that melts easily if the current in the circuit is too high
Fuse
resistor
earth wire
battery
diode
Earth wire must be connected to the (a) of appliances.
Fuses should be connected in (a) (series/parallel) with the live wire.
IMAGE SHOWN IS A ......
MINIATURE CIRUIT BREAKER
FUSE
BIG SWITCH
SWITCH FOR HIGH VOLTAGE
WHAT IS THE IMAGE SHOWN -
ULTRA POWER BATTERY
MCB
FUSE
CELL
