How to Use Nodal Analysis for Circuit Analysis?

[naivy]

Homework Statement

Homework Equations

nodal analysis

The Attempt at a Solution

When i did the problem, i got 3V. Is this right or wrong?

 

[gneill]

When i did the problem, i got 3V. Is this right or wrong?

It is incorrect.

Show your work if you want help.

 

[naivy]

 

[gneill]

Your formula (1) doesn't seem to match the circuit diagram. Shouldn't V2 = V1 + 18V?

 

[naivy]

Your formula (1) doesn't seem to match the circuit diagram. Shouldn't V2 = V1 + 18V?

Ah, you're right. Thanks.

If that's corrected and propagated down... I get

V2 = 4.5V, V1 = -13.5V, V3 = 11.25V

So the answer is 11.25V?

 

[gneill]

Looks much better! That's it!

 

[naivy]

Thanks! I really appreciate it.