# Potential difference between points d and c in circuit

## Homework Statement

In the figure below, what is the potential difference Vd - Vc between points d and c if E1(of 1st battery) = 4.7 V, E2((of 2nd battery) = 1.4 V, R1 = R2 = 11 Ω, and R3 = 6.7 Ω, and the batteries are ideal?
http://farm6.static.flickr.com/5053/5469093809_53c7fe57f4.jpg

V= IR

## The Attempt at a Solution

I used superposition in order to find the current at R2 which leads to V2 = I2R2.
I separated the circuit into two circuits , each with one battery and its own calculations then I added them together , but the final answer seems wrong for an unknown reason....
https://scontent-sin6-1.xx.fbcdn.net/v/t35.0-12/15302523_1489883864359796_661161770_o.jpg?oh=7c4c036aa34ea2f78ce415299ea1557d&oe=58425946

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gneill
Mentor
What is the direction of flow of the final current? Will it cause a potential drop or a potential rise between node d and node c?

There's 3 circuits...

What is the direction of flow of the final current? Will it cause a potential drop or a potential rise between node d and node c?
The current flow as mentioned is upward on R2.
I tried puting -0.3 v and 0.3v , both were wrong.

There's 3 circuits...
There are only two batteries and 3 resistors.

gneill
Mentor
The current flow as mentioned is upward on R2.
I tried puting -0.3 v and 0.3v , both were wrong.
Yeah, you'll probably want to conserve more digits through your intermediate calculations.

Yeah, you'll probably want to conserve more digits through your intermediate calculations.
But my steps are right , are not they ? I will do it using less rounding this time.

gneill
Mentor
But my steps are right , are not they ? I will do it using less rounding this time.