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Homework Statement
Two parallel plates are separated by 10.0cm and a potential difference of 500.0V is maintained between them. What is the force on an electron between the plates?
Homework Equations
The Attempt at a Solution
E = F / q = kQ / r2
V = kQ / r = Er = Fr / q
F = Vq / r = 500.0 * e / 0.100 = 8 * 10-16
The actual answer is 8 * 10-18
Where did my calculation go wrong?