WAEC - Physics (1988 - No. 50)
An electron of charge 1.6 x 1019C is accelerated in vacuum from rest at zero volt towards a plate of 40KV. Calculate the kinetic energy of the electron.
4 x 10 25J
4 x 1021 J
6.4 x 1020 J
6.4 x 10-15 J
2.5 x 1020 J
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