Question

Why is it necessary to use a radial magnetic field in case of a moving coil galvanometer?

Answer 1

hlo mate ✌️

The radial magnetic field is always parallel to the plane of the coil of the galvanometer, and provides constant torque irrespective of the rotation of the coil. This makes the deflection directly proportional to the current, and facilitates easy calibration of the galvanometer scale.

Hope it helps.

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Answer 2

hlo mate ✌️

Question :

Why is it necessary to use a radial magnetic field in case of a moving coil galvanometer?

Reason:

To provides constant torque irrespective of the rotation of the coil.

☞ This makes the deflection directly proportional to the current, and facilitates easy calibration of the galvanometer scale.

Hope it helps ❣️