(a) Define one watt. (b) A lamp consumes 1000 J electrical energy in 10 s. What is its power

Q. (a) Define one watt.
(b) A lamp consumes 1000 J electrical energy in 10 s. What is its power 
Ans. (a) Power of a body is one watt when rate of consumption of energy is 1 joule per second.
(b) P = E/t = 1000/10 = 100 W.

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