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Q.

The resistance R = V/I where V = (100±5) volts and I = (10±0.2) amperes. The percentage error in the calculation of R is

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a

3%

b

7%

c

3.5%

d

1.5%

answer is B.

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Detailed Solution

R=VI ∆RR=∆VV+∆II=5100+0.210=7100 percentage error 7%
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The resistance R = V/I where V = (100±5) volts and I = (10±0.2) amperes. The percentage error in the calculation of R is