Question
Two long, straight, parallel wires are separated by a distance of $2d$. They carry steady, equal currents flowing out of the plane of the paper. The variation of the magnetic field $B$ along the line $xx'$ is given by:
Two long, straight, parallel wires are separated by a distance of $2d$. They carry steady, equal currents flowing out of the plane of the paper. The variation of the magnetic field $B$ along the line $xx'$ is given by: