(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In the figure below, R1 = 5.50 , R2 = 18.0 and the ideal battery has an emf E= 12.0 V.

(a) What is the size and direction of current i1? (Take right to be positive.)

(b) How much energy is dissipated by all four resistors in 1.00 min?

2. Relevant equations

I = E/R

resistive dissipation

P=i^{2}R

P=v^{2}/R

3. The attempt at a solution

I am having trouble trying to find the equivalent resistance to find the current i1. I know it should be in the positive direction to the right.

For part b should i just add up the dissapations for the 4 resistors?

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

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Ideal circuit with 4 resistances and one emf.

**Physics Forums | Science Articles, Homework Help, Discussion**