# Homework Help: Simple circuit question

1. Nov 20, 2015

### pinkcashmere

1. The problem statement, all variables and given/known data
Can someone why the voltage $V^-$ is the same voltage as that of R2?

https://www.physicsforums.com/attachments/circuit-png.92144/ [Broken]

2. Relevant equations
-

3. The attempt at a solution
is it an application of KVL concerning the voltage for R1 and $V^-$

Last edited by a moderator: May 7, 2017
2. Nov 20, 2015

### Staff: Mentor

According to your image V- is directly connected to the top of R2. So they must have the same potential with respect to the reference node (ground).