A straight horizontal conducting rod of length `l` and mass `m` is suspended by two vertical
Channel: Doubtnut
Date: 02/08/2020

A straight horizontal conducting rod of length `l` and mass `m` is suspended by two vertical wires at its ends. A current I is set up in the rod through the wires.  (i) What magnetic field should be set up normal to the conductor in order that the tension in the wires is zero.  (ii) What will be the total tension in the wires if the direction of current is reversed, keeping the magnetic field same as before?