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Give an expression for P.E. between any ...

Give an expression for P.E. between any two points due to a given point charge.

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P.E = `V_(1) - V_(2) = ( ( Q)/( 4 pi epsilon_(0))) ((1)/( r_(1)) - (1)/( r_(2)))`
where `r_(1)lt r_(2)` and `V_(1) gt V_(2)`
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