Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors i - Physics MCQ AIEEE 2012 2026 | ExamTest.live

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Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is:

Solution & Step-by-step Explanation

Ohm's Law: R = \frac{V}{I} .The relative error in R is given by: \frac{Δ R}{R} = \frac{Δ V}{V} + \frac{Δ I}{I} Multiplying by 100 to get percentage error: % Error in R = % Error in V + % Error in I % Error in R = 3% + 3% = 6% .

Try it yourself before checking the explanation above.

Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is:

6%

zero

1%

3%

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