Resistance R=V / I where V=(100 pm 5)V and I=(10 pm 0.2) A . percentage error in R .

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1.Units, Dimensions and Measurement

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The resistance $R=V / I$ where $V=(100 \pm 5)\;V$ and $I=(10 \pm 0.2) \;A$. Find the percentage error in $R .$

A

$7$

B

$5$

C

$2$

D

$3$

Solution

The percentage error in $V$ is $5 \%$ and in $I$ it is $2 \% .$ The total error in $R$ would therefore be $5 \%+2 \%=7 \%$

Standard 11

Physics

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