if currentis increase by 2% resistence is decreased by 2% and time isincreased by1%. what is percentage change in heat?
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Answer:
4% will the ans of the question
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Answer:
P=i^2*r
Taking log and differentiating
dp/p=2di/I+0 as differential change in resistance will be zero
Hence percentage change in power =2*percentage change in current
Hence increase =4%
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