Question

Consider two circular metal wire loops each carrying the same current I as shown below. In what r... Consider two circular metal wire loops each carrying the same current I as shown below. In what region(s) could the net magnetic field B be equal to zero?

Answer 1

1) The magnetic field outside the loop is zero.

In region III the magnetic fields due to the two wire loops point in the opposite direction andhence cancel each other. Therefore the magnetic field is zero in region I, III and V

The diagram is attached