Two long parallel straight conductors are separated by a distance and carry equal…

PHYSICS · Single correct · AP · Physics C: Electricity and Magnetism · Magnetic Fields and Electromagnetism · Magnetic Fields and Electromagnetism

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