Question

If the number of turns in the coil of a moving coil galvanometer decreases, the resistance of the galvanometer,

• A. decreases
• B. increases
• C. remains the same
• D. may increase or decrease

Hint:

The resistance of the coil is proportional to the length of its wire, which falls with the number of turns.

Answer 1

The Correct Option is A

Step 1: Link turns to length.
Wire length is turns times the length of one turn.

Step 2: Resistance.
Resistance is proportional to the length, so $R \propto N$.

Step 3: Result.
When $N$ decreases, $R$ decreases. Option (A).

Final Answer:
Option (A). \[ \boxed{\text{decreases}} \]