Physics

Problem

Two long parallel straight conductors are separated by a distance

d

and carry equal currents

I

in the same direction. What is the net magnetic field at the point exactly midway between them? a)

\displaystyle \frac{2\mu_0 I}{\pi d}

, perpendicular to the plane of the conductors b)

\displaystyle \frac{\mu_0 I}{2\pi d}

, perpendicular to the plane of the conductors c) Zero d)

\displaystyle \frac{\mu_0 I}{\pi d}

, along the line joining the conductors