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

Two point charges are placed on the x axis. The charge + 5 q is at x =1.50m , and the charge −q

is at x= -1.50m .

There is a point on the x axis between the two charges where the electric potential is zero. Where is this point?

The electric potential also vanishes in one of the following regions: Region 1, 10.0m>x>1.50m ;

region 2, -1.50m >x> – 10.0m. Identify the appropriate region.

Find the value here.

**2. Relevant equations**

V= kq/r

**3. The attempt at a solution**

For part a)

0 = -1/x + 5/(3-x)

Solve for x, i got 0.5, which is from -1.50

I don’t understand how to get the second region.

http://ift.tt/1gUgjXQ