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NEET Physics · Medium

Units & Measurements: Error Propagation MCQ

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Error PropagationMediumQuestion 5030

Question

For R = V/I, V = (100 ± 5) V and I = (10 ± 0.2) A give maximum error bounds. What is the first-order maximum percentage error in R?
  1. A
    5%
  2. B
    7%
    Correct
  3. C
    2%
  4. D
    9%

Correct answer

7%

Explanation

% error in R = % error in V + % error in I = (5/100)×100% + (0.2/10)×100% = 5% + 2% = 7%.

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