A Problem in " Electric Potential "

1. Jun 7, 2014

Ana Mido

Two charges 4 µc , -6 µc are placed on the x-axis 10 cm apart. where is the electric potential be zero ?

"4 cm apart from the charge of 4 µc"
Is that right ?!!!

Last edited by a moderator: Jun 7, 2014
2. Jun 7, 2014

Jilang

Looks right to me!

3. Jun 7, 2014

SammyS

Staff Emeritus
Hello Ana Mido. Welcome to PF !

Certainly, the point at which the Electric Potential is zero is 4 cm away from the charge of 4 µC , but there may be other points 4 cm away from the charge of 4 µC where the Electric Potential is not zero.

Are you only considering the line on which the two charges lie? ... or some plane in which they lie? ... or three dimensional space?

There may also be some other point (or points) where the Electric Potential is zero .

4. Jun 8, 2014

Ana Mido

I've considered the line on which the two charges lie. No plane . No three dimensional space.
But let's consider the line on which the two charges lie. Will the answer be right ??? !!!

5. Jun 8, 2014

SammyS

Staff Emeritus
I'm rather sure that there should be one other location.

By The Way: You haven't actually removed all ambiguity regarding your answer of 4 cm away from the charge of 4 µC. There are two such locations on the line on which both charges lie.

Last edited: Jun 8, 2014