what is r?


and how do i get it.

Update 2:

How does one get r?

3 Answers

  • Anonymous
    9 years ago
    Favorite Answer

    description of r:

    look at the figure where potential is required at point P located at some distance r from a point charge +Q

    (+Q)----------------------. (P)

    .... <-----------r--------->

    r & Q are given

    k = 8.987 X 10^9 N-m^2/C^2

    substitute in V = kQ/r we get potential V at point P

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  • akm69
    Lv 7
    9 years ago

    Distance from Q to the point where you are finding V.

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  • 9 years ago

    Radius according to my science book

    Source(s): Earth science Glencoe Book P.S it majors in earth science but has physics and all the other stuff
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