Q. In order to increase the sensitivity of galvanometer
A) The suspension wire should be made stiff
B) Area of the coil should be reduced
C) The magnetic field should be increased
D) The number of turns in the coil should be reduced
Explanation
(c) For a galvanometer
$NIAB = C\ \theta$
$\Longrightarrow \ \ \frac{\theta}{I} = \frac{NAB}{C}$
Here, $\frac{\theta}{I}\ $ is called the sensitivity of galvanometer so to increase the sensitivity of galvanometer, C should be decreased and N, A and B should be increased
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.