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JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Application +4 | -1

The heat generated in a circuit depends on resistance (R), current (I) and time of flow (t). If maximum errors in the above are 1%, 0.5%, 1% respectively error in measurement of power is (

P = {i^2}R

)

View answer and explanation

Correct option: A

0.02

Option A (2%) is correct because the percentage error in power is calculated by summing the percentage errors in current (multiplied by 2) and resistance.

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