The heat generated in a circuit is given by Q = i2Rt joule , where ‘i’ is current, R is resistance and t is time. If the percentage errors in measuring i, R and t are 2%, 1% and 1% respectively, the maximum error in measuring heat will be

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2 %

3 %

4 %

6 %

answer is D.

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Detailed Solution

Q=i2Rt;ΔQQ×100=2Δii×100+ΔRR×100+Δtt×100

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