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WAEC - Physics (1988 - No. 50)
An electron of charge 1.6 x 10
19
C is accelerated in vacuum from rest at zero volt towards a plate of 40KV. Calculate the kinetic energy of the electron.
4 x 10
25
J
4 x 10
21
J
6.4 x 10
20
J
6.4 x 10
-15
J
2.5 x 10
20
J
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