Energy dissipated over time by resistors

[scarne92]

Homework Statement

In the figure below, R1 = 9.00 , R2 = 23.0 and the ideal battery has an emf = 12.0 V.

(a) 0.24 A

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

The Attempt at a Solution

Not sure where I went wrong.

P = i_net²R_net

P = i₁²R₂ + i₂²R₂ + i₃²R₂ + i₄²R₁

P = (0.24)²(23)+(0.24)²(23)+(0.24)²(23)+(0.24)²(9)

P = (0.24)²(23+23+23+9)

P = 4.4928 J/s

P = dW/dt

4.4928 = dW/60s

dW = (4.4928)(60)

W = 269.568 J

 

[Redbelly98]

I suspect you calculated R_net incorrectly, and I get something different for i_net than you.

If you show how you calculated R_net, we might be able to spot the error.