d vi + + + + + + + + + + + + Figure P22.28

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You are working on a research project in which you must control the direction of travel of electrons using deflection plates. You have devised the apparatus shown. The plates are of length = 0.500 m and are separated by a distance d = 3.00 cm. Electrons are fired at υi = 5.00 x 106 m/s into a uniform electric field from the left edge of the lower, positive plate, aimed directly at the right edge of the upper, negative plate. Therefore, if there is no electric field between the plates, the electrons will follow the broken line in the figure. With an electric field existing between the plates, the electrons will follow a curved path, bending downward. You need to determine (a) the range of angles over which the electron can leave the apparatus and (b) the electric field required to give the maximum possible deviation angle.

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Figure P22.28
Transcribed Image Text:d vi + + + + + + + + + + + + Figure P22.28
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