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## Homework Statement

## Homework Equations

potential, V = kq/r where k is 1/4 pi epsilon

conservation of charge, sum of q = Q

## The Attempt at a Solution

what i did is let q1 + q2 + q3 = 4*10^-4

then let V1 = V2 = V3 and solve for q3

but i end up getting q3 = 0.0002 which is not the correct ans, which is c, 2.06*10^-4