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Subjects
Science TNSB Mentoring
Class 10 Crash course
Electricity
Power and energy
2.
Unit of power
Question:
3
m.
Select the bestt answer:
What is the commercial unit of electrical energy? Represent it in terms of 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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