JEE Physics · Medium

Errors and Measurements: Combined Error MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Combined ErrorMediumQuestion 30141

Question

Resistance R = V/I. If V = (10.0 ± 0.1) V and I = (2.00 ± 0.02) A, the percentage error in R is:
  1. A
    1%
  2. B
    2%
    Correct
  3. C
    3%
  4. D
    5%

Correct answer

2%

Explanation

%error in R = %error in V + %error in I = (0.1/10.0)×100 + (0.02/2.00)×100 = 1% + 1% = 2%.