The heat generated in a circuit is given by Q = I 2 Rt , 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

Question

The heat generated in a circuit is given by $Q = I^{2} Rt$ , 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, then the maximum error in measuring heat will be

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Answer:

D

Solution:

$Q = I^{2} Rt$

Required error is $2 \times 2 % + 1 % + 1 % = 6 %$

TestHub · Accepted Answer

Q = I 2 Rt Required error is 2 × 2 % + 1 % + 1 % = 6 %

Physics - Unit & Dimension Question with Solution | TestHub

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