Question

A lamp consumes 1000 J of
electrical energy in 10 s. What is
its power?
​

Answer 1

Answer:

Power=100W

Explanation:

Power =work done / time

So the unit of watt is J/s

Power=1000J/10s

=100J/s

=100W

Answer 2

Answer:

100W

Explanation:

Power is given by the expression,

power = work done/time

Work done = Energy consumed by the lamp = 1000 J

Time = 10 s

power = 1000/10= 100J/s

= 100 W

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