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    I'm retaking one module on AS physics, but I'm studying for it on my own and haven't seen my teacher in a while because I don't do A2 physics. But I remember he told me about this equation that you can use to find the number density. I don't have my book but I remembered this equation from my memory but I don't know if it's correct. So can someone please check it for me:

    n = I/e

    n being the number density and I being the current and e is the electronic charge (-1.6 x 10^-19)
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    In your formula, n is the number of electrons passing a point in one second, if thats what you want, then its fine.

    Proof: If we have n electrons passing a point in a second, then each has a net charge e (using corrected current). that means I=ne, as I is the net charge passing a point in a second. Simply then, I/e=n
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    yes, that's correct

    Advancing physics G491 OCR, by any chance?
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    (Original post by madfish)
    yes, that's correct

    Advancing physics G491 OCR, by any chance?
    nope OCR G482
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    (Original post by celina10)
    nope OCR G482
    oh
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    I=nAvq
 
 
 
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