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Electron in an electirc field.

  • #1

Homework Statement



Across what potential difference does an electron have to be accelerated in order to reach speed v=1.80×106 m/s?

Homework Equations



I checked to see if relitivity was important and it was not
E=.5 m v^2=eV


The Attempt at a Solution




I dunno if I am mistaken in what I am trying to find but I thought the potential difference in this case was .5mv^2 But when I plug in 9.109x10^-31 kg in for the mass and 1.8x10^6 m.s for the velocity I don't get the right answer. I do not know what I am doing wrong.
 

Answers and Replies

  • #2
I figured out what I was doing wrong. It was in Joules and I needed to convert to Volts.
 

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