Two parallel long wires carry currents i and i with i i When

Last updated: 6/12/2023

Two parallel long wires carry currents i and i with i i When the current are in the same direction the magnetic field at a point midway between the wire is 20 T If the direction of i is reversed the field become 30 T The ratio i i is 1 4 3 5 2 3 4 1