A coil in the shape of an equilateral triangle of side `l` is suspended between the pole pieces
Channel: Doubtnut
Date: 2020-08-02

A coil in the shape of an equilateral triangle of side `l` is suspended between the pole pieces of permanent magnet. Such that `vecB` is in plane of the coil. If due to a current I in the triangle, a torque `tau` acts on it, the side l of the triangel is: