I really like the approach where you look at the initial state, look at the "final" state and then "connect the dots". A very nice way to present this material.
Thanks for that. I could not gather my thoughts about parallel resistor and inductors but I realized the "tilda" logic is key for making the calculations.
These are soooo helpful, thank you so much for making these!!! Really helpful in checking my intuition with inductors and capacitors with these examples, nice work :)
Amazing explanation, thank you. One thing though, in the first circuit the method you used to get the currents after a long time will get very tricky algebra when you are not given values of the resistors (like in one of my online exercises). Plugging I1 = V/Req = V/(.......) in your loop equations for I2 and I3 basically gets unsolvable (takes too long and bound to make mistakes)... The answer in my textbook (same circuit) skips the algebra, but when put in a calculator it's pretty insane! (It was an electromagnetism exercise by the way, when I had electronics we were usually given values). :)
Good question. Check out my other video on short time limit. It takes time to build up current when there's an inductor. th-cam.com/video/7XfHuKtpI_k/w-d-xo.html
Just curious, how would you find tau (the time constant) for that problem if you wanted to draw it more accurately? Your L would be 20mH, but what would your Rth be?
This is a great video! But if there is another inductor in series with R1 such that the circuit is like R1+L1+(R2||L2), I could not reach a final differential equation. Any comments?
any branch with an inductor will take some time to build up a current. i don't show a switch in my circuit but i'm assuming that initially there is no current. Once you close the switch the inductor will resist change in current and current will start getting bigger. If you ever look at a simple LR circuit you'll see there is a characteristic time for the current to build up.
I really like the approach where you look at the initial state, look at the "final" state and then "connect the dots". A very nice way to present this material.
Thanks for that. I could not gather my thoughts about parallel resistor and inductors but I realized the "tilda" logic is key for making the calculations.
These are soooo helpful, thank you so much for making these!!! Really helpful in checking my intuition with inductors and capacitors with these examples, nice work :)
Thank you! It's comments like yours that motivate me to produce more videos.
Wonderful explanation step by step
Amazing explanation, thank you. One thing though, in the first circuit the method you used to get the currents after a long time will get very tricky algebra when you are not given values of the resistors (like in one of my online exercises). Plugging I1 = V/Req = V/(.......) in your loop equations for I2 and I3 basically gets unsolvable (takes too long and bound to make mistakes)... The answer in my textbook (same circuit) skips the algebra, but when put in a calculator it's pretty insane! (It was an electromagnetism exercise by the way, when I had electronics we were usually given values). :)
Beautifully presented. I am from India
Thank you
Great video dude!!
Hello lovely video, but let's say instead of R2 we had another inductor? Does this mean no current passing at all @t=0?
Good question. Check out my other video on short time limit. It takes time to build up current when there's an inductor. th-cam.com/video/7XfHuKtpI_k/w-d-xo.html
Thank you so much. I'm still having a little trouble with the calculations on the last part but this was a real help 😊
Just curious, how would you find tau (the time constant) for that problem if you wanted to draw it more accurately? Your L would be 20mH, but what would your Rth be?
I am also facing a prob related with tau......the doubt sites are showing u have to short the battery but i dont know why
Joseph Schutte the time constant is written as L/R~ at time 22 mins
cool video
This is a great video! But if there is another inductor in series with R1 such that the circuit is like R1+L1+(R2||L2), I could not reach a final differential equation. Any comments?
you helped me very much thank you
May I know why I3 = 0 at t = 0
any branch with an inductor will take some time to build up a current. i don't show a switch in my circuit but i'm assuming that initially there is no current. Once you close the switch the inductor will resist change in current and current will start getting bigger. If you ever look at a simple LR circuit you'll see there is a characteristic time for the current to build up.
Thanks!
Any JEE guy?
Yeahhhh
Good
thanks sir
Lifesafer