Calculating Vertical Deflection of Electron in Parallel Plate Setup

AI Thread Summary
To calculate the vertical deflection of an electron passing through parallel plates, first determine the force acting on the electron using the electric field strength of 120 N/C. The force can be calculated with F = qE, where q is the charge of the electron. Next, find the resulting acceleration using Newton's second law, a = F/m, where m is the mass of the electron. Calculate the time the electron spends between the plates based on its horizontal velocity and the distance across the plates. Finally, use kinematic equations to find the vertical deflection during this time.
XJellieBX
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Question:
An electron with a velocity of 3.00x10^6m/s[horizontally] passes through two horizontal parallel plates, as in the attached diagram. The magnitude of the electric field between the plates is 120N/C. The plates are 4.0cm across. Edge effects are negligible.
a) Calculate the vertical deflection of the electron.

I'm not sure what I should do here and I would appreciate any help. I think it might be \epsilon=\frac{kq}{r^2}, but I'm not exactly sure. Thanks.
 
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What's the force on the electron while it's between the plates? The resulting acceleration? How long does it spend between the plates?
XJellieBX said:
I think it might be \epsilon=\frac{kq}{r^2}, but I'm not exactly sure.
That's an equation for the field from a point charge, which is not relevant here. You are given the field, so find the force.
 
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