Question

In a Galvanometer, if the number of turns in the coil are doubled, then the electrical current sensitivity will be:

• A. Halved
• B. Sensitivity is independent of number of turns in coil
• C. Doubled
• D. Four times the initial value

Hint:

Remember that the sensitivity of a Galvanometer is directly proportional to the number of turns in the coil. Doubling the number of turns doubles the sensitivity.

Answer 1

The Correct Option is C

The sensitivity \( S \) of a Galvanometer is directly proportional to the number of turns \( N \) in the coil. The formula for sensitivity can be written as: \[ S \propto N \] If the number of turns in the coil is doubled, the sensitivity will also double. Thus, the new sensitivity will be double the initial value. Therefore, the sensitivity will be doubled.