The coil in a tangent galvanometer is `16cm` in radius. How many turns of the wire should
Channel: Doubtnut
Date: 2020-08-02

The coil in a tangent galvanometer is `16cm` in radius. How many turns of the wire should be wound on it if a current of `20mA` is to produce a deflection of `45^@`? Take horizontal component of earth's field `=0*36xx10^-4T`.