An electron is released between the plates of a charged parallel-plate capacitor very close to the right-hand plate. Just as it reaches the left-hand plate, its speed is v.
If the distance between the plates were halved without changing the electric potential between them, then the speed of the electron when it reached the left-hand plate would be
a) 2v
b) sqrt2v
c) v
d) v/sqrt2
e) v/2
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