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

AI Thread Summary
The discussion centers on finding regions where the electric potential equals zero between two charges: a 4μC positive charge and a -2μC negative charge, which are 0.01m apart. The electric potential due to a point charge is given by the equation V = kQ/r, where k is a constant, Q is the charge, and r is the distance from the charge. The potential from multiple charges can be combined by summing their individual potentials. The key to solving the problem lies in identifying the points along the line connecting the charges where the total potential from both charges cancels out to zero. Understanding these principles is essential for determining the regions of zero electric potential.
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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

Homework Equations

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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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...
 
Indeed ##V(\vec r)=kQ/r## for a point charge ##Q## at the origin.
If you have two or more charges, then the electric potentials add up.
 
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