# Why is the voltage across this parallel circuit positive?

1. Sep 17, 2015

### s3a

1. The problem statement, all variables and given/known data
The problem along with its solution are attached in TheProblemAsWellAsSolution.jpeg file. For this post, I'm only referring to part (a), since part (b) is the same thing with another number.

2. Relevant equations
V = IR
Parallel circuit: $I = I_1 + I_2 + . . . + I_n$

3. The attempt at a solution