Q 12-04-032NEETJEE MainEasy
A galvanometer of resistance $100\ \Omega$ gives full-scale deflection for $1$ mA. To convert it into a voltmeter of range $0$–$10$ V, a resistance of
Answer: (D) $9900\ \Omega$ must be connected in series
At full scale the total resistance must be $\dfrac{10}{0.001} = 10\,000\ \Omega$.
The galvanometer supplies $100\ \Omega$, so add $9900\ \Omega$ in series.
Solution by Sreeraj P, M.Sc Physics