Depict the magnetic field lines due to two straight, long parallel conductors carrying current `I_(1)` and `I_(2)` in the same direction.Hence deduce an expression for the force acting per unit length on one conductor due to the other.Is this force attractive or repulsive?
Figure shows a rectangular current carrying loop placed `2 cm` away from a long,straight, current-carrying conductor.What is the direction and magnitude of the net force acting on the loop?