(adsbygoogle = window.adsbygoogle || []).push({}); Very simply "find potential where its zero" question

1. The problem statement, all variables and given/known data

A +3.0 nC char age is at x= 0cm and a -1 nC charge is at x= 4cm. At what point or points on the axis is the electric potential zero?

2. Relevant equations

V= [tex]\frac{kQ}{r}[/tex]

3. The attempt at a solution

i have solved the question, first i tried two places, between the two charges, and after the second charge.

i solved for x= 3cm and x= 6cm.

now the problem is what is i want to check in the negative zone?

now is in

the formula v1+v2 =0

for r1, do i use r1= -p and r2 = 4-p, i am confused about doing it in the negative zone, do i just use the magnitude, if only magnitude, it would be r1=p and r2=4+p, which do i use?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Very simply find potential where its zero question

**Physics Forums | Science Articles, Homework Help, Discussion**