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Physics
Physics
Problem
Which one of the following expresses the electrical energy
E
E
E
consumed by a device of power
P
P
P
operated for time
t
t
t
? a)
E
=
P
t
1000
E = \dfrac{P\,t}{1000}
E
=
1000
P
t
b)
E
=
3600
P
t
E = 3600\,P\,t
E
=
3600
P
t
c)
E
=
P
t
E = P\,t
E
=
P
t
d)
E
=
P
t
3600
E = \dfrac{P\,t}{3600}
E
=
3600
P
t
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