Force on an electron between two parallel plates

AI Thread Summary
The discussion revolves around calculating the force on an electron between two parallel plates separated by 10.0 cm with a potential difference of 500.0 V. The initial attempt used the formula F = Vq / r, resulting in a force of 8 x 10^-16 N. However, the correct answer is 8 x 10^-18 N, indicating a miscalculation. Participants emphasize the importance of checking units and the equations used in the calculations. The thread highlights the need for careful attention to detail in physics problems.
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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?
 
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I got the same answer as yourself.Don't forget the units.
 
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