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A thin rod of length L is non-uniformly charged. The charge density is described by the...

A thin rod of length L is non-uniformly charged. The charge density is described by the expression λ=cx, where c is a constant, λ is the charge per length, and x is the coordinate such that x=0 is one end of the rod and x=L is the other. Find the total charge on the rod and the electric potential at a field point just touching the rod at the x=0 end.

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