Q. Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
A) 250 Ω
B) 25 Ω
C) 40 Ω
D) 500 Ω
Explanation
[Solution] $R = \frac{I_s}{V_s} = \frac{5000\ div/A}{20\ div/V} = 250$ Ω. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.