(a) Two straight long parallel conductors carry currents `I_(1)` and `I_(2)` in the same direction.
Channel: Doubtnut
Date: 2020-01-03

(a) Two straight long parallel conductors carry currents `I_(1)` and `I_(2)` in the same direction. Deduce the expression for the firce per unit length between them. Depict the pattern of magnetic field lines around them. (b) A rectangular current carrying loop EFGH is kept in a uniform magnetic field as shown in the figure. (i) What is the direction of the magnetic moment of the current loop ? (ii) What is the torque acting on the loop (A) maximum, (B) zero ?