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  1. K

    A question on flux, and on field integration

    and another question please: I understand Gauss's law in regards to plains (thanks to you). but how does it work when dealing with a sphere? i know how to integrate the whole thing, but i'm trying to get it in a more intuitive manner. when i calculate the flux , I'm looking at infinitesimal area...
  2. K

    A question on flux, and on field integration

    i have principles of physics, 9th edition, by Halidy & Resnick. @greswd: if i put a bar inside, wouldn't i have 0 E at the top and bottom?
  3. K

    A question on flux, and on field integration

    so, if i want to treat E as a vector, i must relate it to a certain point? i thought the field was a vector anyhow, so i can add it however i wanted. i'm adding a picture that might make things clear. the green arrows are E exerted by a single charge at (0,0,0). so, from symmetry, you argue that...
  4. K

    A question on flux, and on field integration

    but doesn't the E that go in the +Y direction "cancels" the one going in the -Y direction?
  5. K

    A question on flux, and on field integration

    so what you are saying (in regards to question no. 1) is that when i get E=0, it's because im adding vectors for which the total sum is zero (opposite directions) while the flux does not "consider" that case, and is a "per case" thing - each face has it's own flux, even though total E is zero...
  6. K

    A question on flux, and on field integration

    hey all, i've recently started studying electrostatics, and i have couple of question about things that i did not fully understand, and would very much appreciate if someone could set me straight. 1) how can a cube, with a single charge in the middle of it have a flux? don't the field lines...
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