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A device rated runs for each day
PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity
Problem
2. A device rated
750
W
750\,\text{W}
750
W
runs for
4
h
4\,\text{h}
4
h
each day. Which one of the following expressions correctly gives its energy consumption for one month of
30
30
30
days in kWh? (a)
(
0.75
)
(
4
)
(0.75)(4)
(
0.75
)
(
4
)
(b)
(
750
)
(
4
)
(
30
)
(750)(4)(30)
(
750
)
(
4
)
(
30
)
(c)
(
0.75
)
(
4
)
(
30
)
(0.75)(4)(30)
(
0.75
)
(
4
)
(
30
)
(d)
(
0.075
)
(
4
)
(
30
)
(0.075)(4)(30)
(
0.075
)
(
4
)
(
30
)
Related theory
Electric Power
Electric Circuits
Electricity
Electrical power and energy
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