Physics - Magnetism Question with Solution | TestHub

The resistance of a coil is given by $R=\rho \frac{l}{A}$.

The total length of the wire in the coil is $l=N\times \text{perimeter of one turn}$, where $N$ is the number of turns.

Thus, the resistance of the galvanometer is directly proportional to the number of turns ($R\propto N$).

When the number of turns in the coil decreases, the total length of the wire decreases.

Consequently, the resistance of the galvanometer decreases.

Answer: decreases