Electrons travelling in a circular path of a radius 2m at a rate of 1.0*10^6 revolutions per second are diverting into a region between two charged plates iwth a potential difference of 40V. These plates are 3.2cm long and are seperated by 8mm. As the electrons emerge from the region between the plates, what is the amount of deflection from the original path? (If you want a diagram i'll sketch one up really quick)(adsbygoogle = window.adsbygoogle || []).push({});

Anyways, to start..

I tried to caluclate the velocity of the electron by using v = (2)(pi)(r) / T. I then took that velocity into the formula Vf^2 = Vi^2 + 2ad, and found out its final velocity. Before I did that though, I found out the electric field between the plates, then found the electric force using that formula. Then, using F = ma, I found the acceleration. I took everything I got into Ei = Ef, which is Kinetic Inital = Potential Final + Kinetic Final.

I keep getting a negative "h" (which I planned to use for "d"), so I must be doing something wrong... can someone help me out? Thanks!!

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# Homework Help: Circuitry and then some

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