Question

The poles of the permanent magnet used in a moving coil galvanometer are shaped as:

विकल्प

• sharp conical points

• flat parallel planes

• concave cylinders

• convex spheres

Answer 1

The permanent magnet has concave cylindrical poles, which together with the soft-iron core provide a strong radial magnetic field in which the plane of the coil remains parallel to the field at every position.