Circuits analysis with independent current source

[intelwanderer]

Homework Statement

https://www.edx.org/static/content-mit-6002x/images/circuits/H1P2.79e52b492b94.png

Homework Equations

It's been a while since I've done KCL/KVL, could be that I'm being just being stupid.

I'm trying to find v1, i4, and the power in all the circuit elements.

The Attempt at a Solution

I just used KCL at the top node and got 5 as the voltage. I called the top node "A". A + (A-4)/3 = 8.

From there, I got that v1 equals 5 V because there is no resistor there(which is wrong), and the values of i1-3(16/3, 5, 1/3). i4 I GUESS is 1/3, but I don't think that is right. Power of the 1 ohm resistor is 25, and 1/3 for the 3 ohm resistor.

So apparently, I've screwed up. Help?

 

[gneill]

Check your work on the KCL: A + (A-4)/3 = 8. A=5 doesn't satisfy the equation.

 

[intelwanderer]

Ah, I see. God, that was stupid. If I have more problems(probable), I'll post them on this thread.

 

[hekan]

Hey man! How did you find other problems? Can you give me solutions? please)

 

[intelwanderer]

PM me. What problems are you having?