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Re: [Phys-L] circuit analysis : a simpler approach?


On Sep 2, 2015, at 9:37 AM, Diego Saravia <dsa@unsa.edu.ar> wrote:

I was wrong, KL are not universal testing device.

Lets have a batery in a loop with 2 condensers. battery 1.5 V C1=1.5V
C2=0V

Its ok? ...... NO

if the previous conditions were B=1.5V C1=0V C2=1V, when you have a switch
open, and close it


There are several conditions that satisfies KVL, but are not correct. all
VC1+VC2=1.5V


Well, doesn’t it depend on what you mean by “testing”?

C1=1.5 V and C2=0 V *is* a valid solution.

It’s just that it’s not the particular solution that is also consistent with the initial conditions.

KL only checks that any given steady-state solution is physically allowed. Time dependence is a separate issue.

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Carl E Mungan, Assoc Prof of Physics 410-293-6680 (O) -3729 (F)
Naval Academy Stop 9c, 572C Holloway Rd, Annapolis MD 21402-1363
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