An electron of mass $m$ and charge $e$ falls through a distance of $h$ meters in a uniform electric field $E$. What is the time of fall?

Question

$t = \sqrt{\frac{2hm}{eE}}$

$t = \frac{2hm}{eE}$

$t = \sqrt{\frac{2eE}{hm}}$

$t = \frac{2eE}{hm}$

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