Two parallel, long wires carry currents `i_1 and i_2` with `i_1gti_2`. When the currents are in the
Channel: Doubtnut
Date: 2020-07-05

Two parallel, long wires carry currents `i_1 and i_2` with `i_1gti_2`. When the currents are in the same direction, the magnetic field at a point midway between the wires is 10mu T. If the direction of `i_2` is reversed, the field becomes 30mu T . The ration` i_1/i_2` is