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The constant stream of high speed electrons emerging from an
"electron gun" were accelerated from rest by the applied
voltage across parallel plates as shown in the diagram.
(a) If the beam current is 0.24 A, how many electrons
emerge from the aperture of the gun each second?
AN
electrons/second
At
(b) How fast are the electrons moving if the beam contains 1.5 x 10¹2 electrons/m?
V =
m/s
applied.
voltage
aperture
2007

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