Physics

Problem

Three infinitely long straight conductors, each carrying the same current

I

out of the page, are fixed at the vertices of an equilateral triangle of side

a

. What is the magnitude of the magnetic field at the centroid of the triangle? a)

\dfrac{3\sqrt{3}\,\mu_0 I}{2\pi a}

\dfrac{\sqrt{3}\,\mu_0 I}{2\pi a}

0

\dfrac{\mu_0 I}{2\pi a}