COMEDK · Physics · 1. Mathematics in Physics
The heat generated in a wire depends on the resistance, current and time. If the error in measuring the above are \(1 \%, 2 \%\) and \(1 \%\), respectively, the maximum error in measuring the heat is
- A \(8 \%\)
- B \(6 \%\)
- C \(18 \%\)
- D \(12 \%\)
Answer & Solution
Correct Answer
(B) \(6 \%\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \text { } H=i^2 R t \\ & \therefore \% \text { error in } H=2(\% \text { error in } i)+(\% \text { error in } R)+(\% \\ & \text { error in } t) \\ & \qquad=2(2) \%+1 \%+1 \%=6 \%\end{aligned}\)
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