INTERACTIVE EXAMPLE
© Copyright, Department of Physics, University of Illinois at Urbana-Champaign
Comments

Triangular Current Loop


A wire formed in the shape of an equilateral triangle of side d = 8 cm, carries current i = 0.25 A. This loop is located in a region of space that contains a constant magnetic field of magnitude B = 1.3 T, aligned with the negative z-axis as shown in the diagram below.

What is WI to II, the work you would have to do to rotate the coil 180° from Position I to Position II? (Note, the coil is rotated out of the plane of the page, not simply spun in the plane)

WI to II = J