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The resistance R=V/I, where V=(50±2) V and I=(20±0.2) A. The percentage error in R is x%. The value of x to the nearest integer is ______

Asked in JEE Main 16th March 1st Shift 2021 · Percentage error in a derived quantity

Answer: 5

Step-by-step solution

Given: V=50±2 V, I=20±0.2 A.

(Δ R)/R=(Δ V)/V+(Δ I)/I=2/(50)+(0.2)/(20)

=0.04+0.01=0.05.

So x=5.

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