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CGP EDU Academic Team
Published on: September 12, 2026
According to Joule 's law of heating, heat produced \(H^- \quad I^-\) Rt , where I is current, R is resistance and t is time. If the errors in the measurement of I , R and t are 3%, 4% and 6% respectively then error in the measurement of H is
Text Solution
Verified by ExpertsThe correct answer is:
B
\(\mathcal{H} = j^{2} \mathcal{R} t\)
\(\therefore \frac{yH}{H} \div 100 = \left| \frac{2yV}{J} + \frac{3R}{R} + \frac{3r}{t} \right| \times 100\) \(=(2 \cdot 3 + 4 + 6) \% m\) =1646
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