- #1

logearav

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## Homework Statement

Two Charges +q and -3q are separated by a distance of 1 m. At what point in between the charges on its axis is the potential is zero.

## Homework Equations

I formulated the diagram as given in the attachment

## The Attempt at a Solution

At equilibrium V

_{1}= V

_{2}

q/4*pi*epsilon*x = -3q/4*pi*epsilon*(r-x)

(r-x) = -3x

x = -r/2 -1/2 = -0.5m. I took r = 1m because distance of separation between the charges is 1 m. Am i correct? How to write the answer because i get negative distance. Could you please help where is the location of point where the potential is zero.