The current sensitivity of a moving coil galvanometer increases by `35%`, when its resistance is increased by a factor 3. The voltage sensitivity of galvanometer changes by a factor

Options

A. 0.35
B. 0.45
C. 0.55
D. none of the above

Explanation

To solve the problem, we need to analyze how the current sensitivity and voltage sensitivity of a moving coil galvanometer change when the resistance is increased by a factor of 3.

### Step-by-Step Solution:

1. **Understanding Current Sensitivity (Is)**:
- Let the initial current sensitivity of the galvanometer be \( I_s \).
- According to the problem, when the resistance is increased by a factor of 3, the current sensitivity increases by 35%. Thus, the new current sensitivity \( I_s' \) can be expressed as:
\[
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