Q. A tangent galvanometer has a reduction factor of 1 A and it is placed with the plane of its coil perpendicular to the magnetic meridian. The deflection produced when a current of 1 A is passed through it is
A) $60{^\circ}$
B) $45{^\circ}$
C) $30{^\circ}$
D) None of these
Explanation
(b) Deflection in tangent galvanometer
$\tan{\theta = \frac{I}{K}}$
Where, $K =$ reduction factor
$tan\theta = \frac{1}{1} = 1 = tan45{^\circ}$
$\therefore\ \ \theta = 45{^\circ}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.