A lamp consumes 1000 J of electrical energy in 10 s. What is its power?
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Solution
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=100"J s"^-1=100W`
Concept: Work Done by a Power
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