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WorksheetsHousehold Electricity
Total questions: 10
Worksheet time: 5mins
A source of current in which current remains constant with time
Electric generator
Mains in our house
Cell
Electric device
SI unit of current
volt
coulomb
ampere
hertz
The expression for power supplied by a source is :
P = V/I
P = V t
P = VIt
P=VI
In generating stations, electric power is generated at :
220 V
11 kV
33 kV
132 kV
Colour coding of live wire is
red
black
yellow
green
Commercial unit of electrical energy is
kW
joule
kWh
watt
Fuse wire is made up of alloy of :
lead and iron
tin and iron
lead and tin
lead and copper
Electrical appliances in our house have
series connection
parallel connection
series and parallel
none of the above
Melting point of copper wire is
1080oC
200oC
220oC
1000oC
An electrical appliance is rated as 60W-120V. The current that can flow through circuit is :
2 A
0.5 A
0.5 C
7200 A
