The current ‘I’ through a resistance R is measures with the following ___

The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%.

If power is computed from these two measured quantities, the uncertainty in the power computed will be

A. 1%
B. 0.5%
C. 1.5%
D. 1.2%

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Answer: D

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