On the first problem in the attached pdf, wouldn't Vo(0-) and Vo(0+) be zero due to the inductor acting as a short?
Attachments
-
607.1 KB Views: 41
In terms of resistance, yes, I would say that you're correct. However, inductors do have a negligible amount of resistance that you can ignore, but that certainly doesn't change the inductance. It's still there.On the first problem in the attached pdf, wouldn't Vo(0-) and Vo(0+) be zero due to the inductor acting as a short?
That makes perfect sense.You can only say an inductor acts as a short to DC current. At t=0 there is a transient event in which case the inductor is most decidedly not a short.
The current in an inductor can not change instantaneously. So at t=0+ the current inductor must be the same as it was at t=0-. Where does that current have to flow to complete the circuit? What can you then tell about the voltage across the inductor?
by Aaron Carman
by Jake Hertz
by Aaron Carman