Photoelectric Effect - A-level Physics

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00:00 Intro
02:33 Experiment setup
03:33 Stopping potential
05:25 Graph
07:50 Threshold frequency & work function
08:28 Proof -
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You explained this thing in 9 minutes and my teacher couldn't do it in years! 😂 thnx M8

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My teacher is awensome but we are in Italy and this lesson with his English was impossible to understand

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Really useful video. Thanks for guiding us through the whole photoelectric experiment process (including showing us how the equation was formed)!

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[@TheCreampi3]

Hi! Thanks, great video! I have a question though. The curcuit you illustrated at 2:33, why did you change the poles? I guess it works both ways, but wouldn't the energy threshhold for the electrons to be jumping over to the other metal plate be much lower before you changed the poles? I mean that it would be an electric field between the two poles. Does your explanation say that the electrons travel in the same direction as the current, if the photoelectric effect is "strong enough"? Best regards

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[@fsto9039]

Given that you have frequency a and b and that a and b are greater than the threshold frequency and b is greater than a. If you read current x on the ampmeter with freq a, what will(or will not) happen with the current when you switch the incoming light to freq b? Intensity is to remain constant, i.e the machine that’s generating the photons is always running on say 10W=10J/s with both freq a and b. (assume straight line photon beam) Thanks for the great video!

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