# In which region is it possible for electric potential = 0?

Two charges that are shown:
I (4uC) II (-2uC) III
In which regions all the line connecting the charges is it possible for the electric potential to be zero?

1. Homework Statement

They are 0.01m apart

## The Attempt at a Solution

I understand that the 4uC charge and the -2uC charge are going to attract...but I have no idea where the potential could be equal to zero.

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Simon Bridge
Homework Helper
Hint:
What is the equation for the electric potential of a point charge?
What si the rule for combining electric potentials?

V= kQ/r

and I'm not sure...

Simon Bridge
Indeed $V(\vec r)=kQ/r$ for a point charge $Q$ at the origin.