- #1
atomicpedals
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Homework Statement
Two horizontal metal plates are 1cm apart in air. An oil drop bearing a charge of one electronic unit is balanced between the plates when the potential difference between them is 800volts. Find the mass of the drop.
Homework Equations
I may need to use some combination of: dV = -E ds, and W = 1/2 eE^2l. But I'm really not even very certain on that.
The Attempt at a Solution
Really I've got nothing on this one! Any suggestions of which way to look for the solution would be much appreciated.