The galvanometer deflection, when key K 1 is closed but K 2 is open, equals θ 0 (see figure). On…

The galvanometer deflection, when key $K_1$ is closed but $K_2$ is open, equals ${\theta }_0$ (see figure). On closing $K_2$ also and adjusting $R_2$ to $5\Omega ,$ the deflection in galvanometer becomes $\frac{{\theta }_0}{5}.$ The resistance of the galvanometer is, then, given by [Neglect the internal resistance of battery]:

1. $12\Omega$
2. $22\Omega$
3. $5\Omega$
4. $25\Omega$

Solution

Asked in: JEE Main 2019 (12 Jan Shift 1)

Practice more Current Electricity questions on Aicharya