- #1

- 19

- 0

## Homework Statement

[/B]

Q: What is the power dissipated by R1?

## Homework Equations

Ohm's law: V = IR

Power: P = VI, I

^{2}R, V

^{2}/R

Kirchoff's circuit and voltage laws

## The Attempt at a Solution

I assumed the currents were I

_{1}travelling rightwards from the top battery, I

_{2}rightwards from the second battery, and came together to make I

_{3}for the bottom branch. The bottom resistor pair I simplified to 10/7 Ohms. From here I assume I have to set up simultaneous equations to solve for I

_{1}.

I used the equation for the bottom branch 1.5V - 10/7 * I

_{3}= 0 to get I

_{3}= 1.05A.

I subbed this into the equation for the outer loop 1.5 - 3I

_{1}- 10/7I

_{3}= 0. However plugging 1.05A into this gave me 0 for I

_{1}...

I feel like I'm way off the mark..