Question

In a moving coil galvanometer, radial magnetic field is used so that,

• A. Deflecting torque depends on deflection of the coil
• B. Deflecting torque is independent of deflection of the coil
• C. Deflecting torque is independent of current
• D. None of the above

Answer 1

The correct option is B Deflecting torque is independent of deflection of the coil

In a galvanometer, current and deflection have a directly proportional relation with all other quantities remaining constant.
To achieve this, radial magnetic field is used so that the deflecting torque depends only on current flowing through the coil.
$\therefore$ correct answer is (b)