A circular coil of `120` turns has a radius of `18cm` and carries a current of `3*0A`.
Channel: Doubtnut
Date: 2020-08-02

A circular coil of `120` turns has a radius of `18cm` and carries a current of `3*0A`. What is the magnitude of the magnetic field (i) at the centre of the coil (ii) at a point on the axis of the coil at a distance from the centre equal to the radius of the coil?