question_answer

The resistance of a metal is given by \[R=\frac{V}{I}\]where V is potential difference and I is the current. In a circuit the potential difference across resistance is \[V=(8\pm 0.5)V\] and current in resistance \[I=(2\pm 0.2)A\]. What is the value of resistance with its percentage error?

A) \[4\Omega \pm 16.25%\]

B)  \[(4\pm 0.7)\Omega \]

C)  \[4\Omega \pm 0.7%\]

D)  \[4\Omega \pm 7%\]