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Physics CBSE Live product
Class 10 (2025-26)
Electricity
Numericals III
2.
Unit of power
Question:
3
m.
Select the correct answer:
Name the commercial unit of electrical energy and convert it into joules.
The commercial unit of electrical energy is
kilowatt-hour
joule-hour
horse power
watt-joule
.
1
kilowatt
hour
=
i
kilowatt
×
i
hour
=
i
kW
×
i
×
i
s
=
i
W
×
i
s
=
i
×
10
i
J
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