What is the function of the radial magne...

What is the function of the radial magnetic field in the moving coil galvanometer?

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### Step-by-Step Solution: 1. **Definition of Radial Magnetic Field**: The radial magnetic field in a moving coil galvanometer is a magnetic field that is directed radially outward from the center of the coil. This means that the magnetic field lines are straight and uniformly distributed around the coil. 2. **Uniformity of the Magnetic Field**: The radial magnetic field is designed to be uniform, meaning that its strength and direction do not vary across the area where the coil moves. This uniformity is crucial for the proper functioning of the galvanometer. 3. **Torque on the Coil**: When a current passes through the coil placed in the radial magnetic field, it experiences a torque (τ) due to the interaction between the magnetic field and the current in the coil. The torque is given by the formula: \[ ...

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To make the field radial in moving coil galvanometer

the number of turns in the coil is increased

poles are cylindrically cut

magnet is taken in the form of horse shoe

coil is wound an aluminium frame

To make the field radial in a moving coil galvanometer

The number of turns in the coil is increased

Magnet is taken in the form of horse-shoe

Poles are cylindrically cut

Coil is wounded on aluminium frame

The radial magnetic field is used in a suspended coil galvanometer to provide

a uniform torque on the coil

maximum torque on the coil in all positions

a uniform and maximum torque in all positions of the coil

a non uniform torque on the coil