Ideal circuit with 4 resistances and one emf.

[Mike88]

Homework Statement

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?

Homework Equations

I = E/R
resistive dissipation
P=i²R
P=v²/R

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?

 

[noumed]

What figure? =D
For part b you are correct, P = I²R is the energy dissipated on that resistor, so you'd have to find the corresponding value of the current going through a particular resistor.

 

[Mike88]

What figure? =D
For part b you are correct, P = I²R is the energy dissipated on that resistor, so you'd have to find the corresponding value of the current going through a particular resistor.

I forgot to attach it but i figured the problem out anyway.