In a moving coil galvanometer, the magnetic field used is 5T. The coil has 100 turns,
Channel: Doubtnut
Date: 2020-08-30

In a moving coil galvanometer, the magnetic field used is 5T. The coil has 100 turns, each of mean area `10 xx 10^(-4)` m^(2). If a current of `10^(-7)` A produces a deflection of 1 mm on a scale 1m away, calcualte the current reduction factor of the galvanometer and the torsional rigidity of the suspension wire.