Q 12-04-176JEE MainJEE Main 2021 (27 Aug, Shift 2)Easy
For full scale deflection of total $50$ divisions, $50$ mV voltage is required in galvanometer. The resistance of galvanometer if its current sensitivity is $2$ div/mA will be:
Answer: (B) $2\ \Omega$
Full-scale current $= \dfrac{50\ \text{div}}{2\ \text{div/mA}} = 25$ mA.
$$G = \frac{50\ \text{mV}}{25\ \text{mA}} = 2\ \Omega$$
Solution by Sreeraj P, M.Sc Physics