A rectangular coil of area `5.0 xx 10^(-4)m^(2)`  and 60 turns is pivoted about one of its vertical
Channel: Doubtnut
Date: 30/08/2020

A rectangular coil of area `5.0 xx 10^(-4)m^(2)`  and 60 turns is pivoted about one of its vertical sides. The coil is in a radial horizontal magnetic field of  `9 xx 10^(-3) T`. What is the torsional constant of the spring connected to the coil if a current of 0.20mA produces an angular deflection of `180^(@)` ?