Question

A lamp comsumes 1000J electrical energy in 10 seconds.what is the powerof lamp after 1 hours?
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Answer 1

Explanation:

Power = Energy / time

for 10 s ,

Power = 1000/10

= 100 watt

1 hour = 60×60 seconds

= 3600 s

for 10 s the power is 100 watt

so for 3600 s

100 × 3600 = 36000 watt

10

The power of lamp after 1 hr = 36000 watts