Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

In the given circuit, the resistance of the galvanometer is $G = 100 Ω$. Resistance box R contributes 4900 Ω. When key K is closed. The needle of the galvanometer deflects to the 20th division. The figure of merit of the galvanometer is:

Options:

$2 × 10^{-5} A/div$

$2 × 10^{-4} A/div$

$5 × 10^{-5} A/div$

$5 × 10^{-4} A/div$

Correct Answer:

$2 × 10^{-5} A/div$

Explanation:

The correct answer is Option (1) → $2 × 10^{-5} A/div$