Two long straight wires are set parallel to each other. Each carries a current in the same direction

Question

Two long straight wires are set parallel to each other. Each carries a current in the same direction and the separation between them is 2 r . The intensity of the magnetic field midway between them is\

Professor PC Thomas Classes · Answer

Magnetic field induction at $P$ due to parallel conductors carrying currents in the same direction will be equal in magnitude and opposite in direction, hence resultant magnetic field induction at P is zero.\