# Basic circuit analysis problem

1. Oct 7, 2012

### qpham26

1. The problem statement, all variables and given/known data
(a) Find v1 and v2 in the following circuit. ( i assume that they are asking for voltage of 30Ω and 5Ω)
(b) Determine the power dissipated in the 6-Ω resistor.
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/580277_498142810205239_1717053686_n.jpg [Broken]

2. Relevant equations
Equivalent resistor equation.
Current divider

3. The attempt at a solution
simplified the 3 parallel resistors in to Req = 6Ω
Find Is = 12V/ (12+6+6) = 0.5A
Back to original circuit, 30Ω || 25+5Ω => Req2 = 15Ω
Use current divider rule to find Current of eq2 = (10Ω x 0.5A)/(10+15Ω) = 0.2A

Use that to find I1 = 0.1A and I2=0.1A

so V1 = 0.1 x 30 = 3V
V2 = 0.1 x 5 = 0.5V

P = Is^2 x 6Ω = 1.5W

THanks for your time.

Last edited by a moderator: May 6, 2017
2. Oct 7, 2012

### Staff: Mentor

All looks right.

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