Three long straight wires are parallel and occupy the vertices of an equilateral triangle, as in the figure. The bottom 2 wires carry current into the page, while the current in the upper one is out of the page. All currents are 100A. a) Find the magnetic field at the center of the triangle, magnitude and direction. b) Suppose an electron were fired into the paper, with velocity v=108 m/s, initially along a line through the center of the triangle, which is parallel to the wires. What would be the initial force on it, magnitude and direction.

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.