#### psecody

##### Member

Ok so we had this homework where we're using KVL to find voltage across components or between two nodes/terminals. At first I thought I got the right answer fairly quickly then someone else in the class worked it and got a different answer and so a group of about six of use worked on it for about an hour and still weren't 100% sure if we were getting the right answer. Our teacher hasn't been the best one either and pretty much ran through a few problems then left and didn't give us any help on this problem.

The descriptions at the top where it says for example Vsub10 means the voltage between the nodes 1 and 0.

Anyway I figured (a) by first doing this problem: Vsub12+Vsub20+Vsub01=0

so Vsub12-20-50=0 from this I got Vsub12=70V

Next I go to solve Vsub32 with the following: Vsub32+Vsub20+Vsub03=0

so Vsub32-20-30=0 from this I got that Vsub32=50V

next (b) asks for Vsub31 so if Vsub32=50V and Vsub21=-70V then Vsub31 would equal 50-70 or Vsub31=-20V.

I've attached the original problem on here too. Were we doing that right? Thanks I appreciate it.

The descriptions at the top where it says for example Vsub10 means the voltage between the nodes 1 and 0.

Anyway I figured (a) by first doing this problem: Vsub12+Vsub20+Vsub01=0

so Vsub12-20-50=0 from this I got Vsub12=70V

Next I go to solve Vsub32 with the following: Vsub32+Vsub20+Vsub03=0

so Vsub32-20-30=0 from this I got that Vsub32=50V

next (b) asks for Vsub31 so if Vsub32=50V and Vsub21=-70V then Vsub31 would equal 50-70 or Vsub31=-20V.

I've attached the original problem on here too. Were we doing that right? Thanks I appreciate it.