Question

wht it is advantage fir the amature to be rotate in radial magnetic field rather than a uniform one?

Answer 1

 radial magnetic field is a magnetic field wherein the coil’s plane stays parallel to the magnetic field’s direction in all positions.

A magnetic field is a vector field that defines the effect of magnetism on electric charges, electric currents, and magnetic materials that changes.

• Radial fields are drawn from the central point.
• The field is nearest to the surface of the object, that weakens as you move further forward.
• The arrows point outward with a positively charged, whereas the arrows point inwards with a negatively charged.
• The radial magnetic field is also parallel to the coil plane of the galvanometer, which creates constant torque regardless of the rotation of the coil.
• This makes the deflection precisely proportional to the current and allows the basic calibration of the galvanometer scale

Radial magnetic field applied according to radius of circle