An electron moves in a circular path perpendicular to a
Chapter 19, Problem 19.66(choose chapter or problem)
An electron moves in a circular path perpendicular to a uniform magnetic fi eld with a magnitude of 2.0 mT. If the speed of the electron is 1.5 _ 107 m/s, determine (a) the radius of the circular path and (b) the time it takes to complete one revolution.
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