Radial Galvanometer define
Answers
Answer:
The hemispherical magnetic poles produce a radial magnetic field in which the plane of the coil is parallel to the magnetic field in all its positions. A small plane mirror attached to the suspension wire is used along with a lamp and scale arrangement to measure the deflection of the coil.
Explanation:
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Answer:
What is the use of radial magnetic in galvanometer?
Yugesh Naidu
Yugesh Naidu, Enthusiastic about magnetism
Answered Jul 12, 2016
See to allow maximum magnetic flux through the coil on core so that it gains maximum torque due to magnetic field you would need a radial magnetic field .
But as you asked what is the reason ? Why a radial one and why not the satndard bar magnet?
The reason is magnetic flux is maximum through coil only if the face of coil is normal to the flux meaning the area vector of the face of coil must be parallel to the flux always , which you can understand from the following equation for torque i.e,
T=BINAcos(a) where a is the angle between area vector and magnetic flux , so you must have noticed that the T will be maximum only if cos(a) is 1 i.e, parallel to flux ,
but how is this achieved through radial field?
That is simple