Q. The sensitivity of a tangent galvanometer is increased if
A) Number of turn decreases
B) Number of turn increases
C) Field increases
D) None of the above
Explanation
(b) Sensitivity $S = \frac{\theta}{i} = \frac{\theta}{K\tan\theta}$ where $K = \frac{2RB_{H}}{\mu_{0}N}$
For increasing sensitivity $K$ should be decreased and hence number of turns should be increased
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.