Given below are two statements: Statement I: If the number of turns...

For a moving coil galvanometer,

$\left(NiAB\right) = k\theta$

The current sensitivity is given by

${S}_{i} = \dfrac{NAB}{k}$

So, if $N$ is doubled then, the current sensitivity is also doubled.

The voltage is given by

$V = \left(\dfrac{BNA}{Rk}\right)\theta$

The voltage sensitivity is given by

${S}_{v} = \left(\dfrac{NAB}{kR}\right)$

As, $N$ is increased, $R$ also increases. So, the voltage sensitivity does not change as $\dfrac{N}{R}$ remains constant.