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$3$
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A$7$
a The percentage error in $V$ is $5 \%$ and in $I$ it is $2 \% .$ The total error in $R$ would therefore be $5 \%+2 \%=7 \%$
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