AC Circuits - Impedance & Resonant Frequency
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- Опубликовано: 29 сен 2024
- This physics video tutorial explains the basics of AC circuits. It shows you how to calculate the capacitive reactance, inductive reactance, impedance of an RLC circuit and how to determine the resonant frequency as well as the phase angle and the power dissipated in the circuit. This physics video has plenty of examples and practice problems for you to work on.
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Direct Link to The Full Video:
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Physics PDF Worksheets:
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Direct Link to The Full Video: bit.ly/3vEFYjI
Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html
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Check the description box to see how to access the other half of this presentation.
Edit: Oh wait. I see he did direct you to the description box, at a break in this video. Well there you have it.
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Thank for this! I'm in college circuit class and we're going over this now! Love your content
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Facts
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Near the end of the video:
Power Dissipated = (I ᵣₘₛ)² × R, emphasis on "rms".
Power Dissipated = (I ᵣₘₛ) (V ᵣₘₛ) cos θ.
Hence, both formulae give us a value of 5.95 Watts instead.
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Dont you have to apply complex numbers to find impedance for RLC circuits, due to phase?
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This is a fantastic video on AC circuit analysis. Very clear step by step explanation with beautiful Q&A type worked out examples. I got a clear explanation of resonance in RLC circuits The video makers voice over is clear with the correct pacing and easy to follow. Big thumps up!.
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To make these learning easier have some subheadings pls trying to understand
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So on question 3, when solving for current, why didn't we use Vrms?
Plz make another integer video
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Please how did he get 445.6 I’m not getting it
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A very sharp, clear almost squeaky British voice, but pronounces like an American. Perhaps, he lives and teaches in the States
(700/2pi * 0.25)
can someone tell me how he got 445.6? Thanks
Completely in the same boat, I'm getting 274.9, but if I reverse the formula and do 2pi x 445.6 x 0.25 I get 699.9 so I don't understand what's going wrong with the order of operations.
Try to put 2pi * 0.25 between brackets to get the right order of operations
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Another outstanding video discussing all variations on the calculations and how to cross check the answers. However I wish that he would elaborate more on a couple points about when he said that the current leads the voltage in a circuit with a capacitor and the current lags the voltage in a circuit with an inductive element. What does that mean exactly? That the sine wave for one or the other is pi/2 further along the graph? Also what is the lead/lag relationship between current and voltage in a circuit that has both and inductor and a capacitor? Does it depend on the characteristics of each element in terms of units of Henry's?🤔
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At 1:39 can you find power using the formula. P = I^2(R)?
Great vid, but your inductors aren't drawn properly. It's supposed to resamble a coil, your looks too similar to a resistor, like a less pointy resistor basically. May confuse people.
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Working with an AC source is easy. Where is the DC only circuitry math?
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Awesome job explaining, however as I was looking through my book it explains that the current in the capacitor lags by 90 and vice versa for inductor. Just putting this out there.
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Eddy current explanation video please??
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MR. Organic Chemistry Tutor , thank you for an incredible video/lecture on AC Circuits - Impedance and Resonant Frequency in Engineering Physics. I am very familiar with this topic from Engineering Physics II and III, however I don't fully understand these concepts from years past.
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other books say the total impedance =R + jwL . Can you please explain why as compared to your formular
Make some videos only with practical exercises and if we got stuck we can reference to your existing videos.
And put the right answers somewhere on your website to verify.
" Practice makes perfect "
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Are you confusing energy with current over time?
is there o LC circuit (Inductor and capicitator)
The more I listen the more I hear it
Please do Leontief Input-Output Models
Thnks sir
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