Question

a potential difference of V is 100 + or - 5 volts and current is 10 + or - 0.5 A. calculate the percent error

Answer 1

$$\begin{gathered} V=100\pm 5v \\ I=10\pm 0.5A \\ Resis\tan ceR=\frac{V}{I}=\frac{100}{10}=10\Omega \\ Errorinresis\tan ce: \\ \frac{∆R}{R}=\frac{∆V}{V}+\frac{∆I}{I} \\ \frac{∆R}{10}=\frac{5}{100}+\frac{0.5}{10} \\ ∆R=1\Omega \\ R=10\pm 1\Omega \end{gathered}$$