- #1
orangeincup
- 123
- 0
Homework Statement
I'm doing a practice problem and I'm asked to find source voltage and source current of the circuit below.
Homework Equations
i=v/R
i1+i2+i3..=0 (KCL)
v1+v2+v3..=0(KVL)
The Attempt at a Solution
So I started by calculating the current for the 2kΩ resistor, which I said 5V/2kΩ=2.5 mA.
Now I used it on the far right 8kΩ resistor to calculate the voltage, I calculated the voltage to be 8kΩ*2.5mA=20V.
I want to use both voltages, 5V and 20V, to calculate the KVL for the far right loop.
So now I have the 20kΩ resistor + 5V +20V should all equal zero, but I'm unsure of which values are positive or negative to finish my KVL loop. How can I know if the voltage is positive or negative with the information I was given?
So n