A third long parallel wire is placed between two fixed parallel wires carrying unequal currents in the same direction. Which statements are correct about a point where the magnetic fields of the fixed wires cancel?
Select all that apply

Question

A third long parallel wire is placed between two fixed parallel wires carrying unequal currents in the same direction. Which statements are correct about a point where the magnetic fields of the fixed wires cancel?

Select all that apply

G1 Physics · Accepted Answer

Between same-direction currents the fields oppose. Equality I₁/r₁=I₂/r₂ places the zero-field point closer to the smaller current.