(Answered) Question show that r and then redo exampleexample if

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Question: Show that R = and then redo Example.

Example: If electrons accelerate from rest through 200V, they acquire a kinetic energy of 200eV. Assume that a beam of these electrons enters a region of uniform magnetic field of B = 5mT. If the beam enters perpendicular to B, what is its radius of curvature?

First, find the velocity of the electron.

F = qvB sinΘ

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