February 25, 2017

Homework Help: Physics - Potential difference (check + help)

Posted by Anonymous on Wednesday, October 13, 2010 at 5:15am.

A pair of horizontal plates are situated in a vacuum and separated by a distance of 1.8cm. What potential energy would need to be connected across the plates in order to hold a single electron suspended at rest between them?

I used the formula
(qv)/d = mg ; where q=is the charge on the electron, d is the distance in metres; m is the mass and g is the gravitational constant on earth.

i get 1.00540...*10^-12

is this the correct answer??

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