Question

The potential difference between the plates of Two parallel plates is 400V. a. Find the maximum...

The potential difference between the plates of Two parallel plates is 400V.

a. Find the maximum speed a proton could have and still be brought to a stop by the field between the plates before it reaching the other side?

b. Show the orientation of the positive/negative plates to the motion of the proton needed to bring the proton to a stop.

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Answer #1

The decrease in kinetic energy will appear as increase in potential energy of the proton as it goes through the potential difference as shown below. We use this to find the required speed.


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