Transformers - working & applications (step up and step down) | A.C. | Physics | Khan Academy
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- Опубліковано 5 вер 2024
- Transformers step up (increase) or step down (decrease) AC voltage using the principle of electromagnetic induction - mutual induction. A changing current in the primary coil induces an e.m.f in the secondary. Since the e.m.f generated depends on the number of turns, the voltage induced in the secondary can be changed - stepped up or down - by altering the turn's ratio.
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Hands down, the best video on transformer. I ever watched!! Thank you sir for being such a great teacher!!
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We've all been using wireless charging all this time 🤯
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I have a doubt
If the change of magnetic flux generated can produce the same amount of emf in another coil(secondary)
Then wont the change of magnetic flux induce the emf in itself(primary coil) and affect the flow of current in it?
Thank you for providing us education .
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ua-cam.com/video/ygzss6mYlZs/v-deo.html.
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First Like.
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This is literally the best lecture on tranformers, great explanantion all doubts cleared. Most of the other videos I found were mostly just definition and formula based due to which I couldn't actually get their working.
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Is emf essentially the same as potential difference?
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هاي بتش
Sir but current increases on decreasing the voltage
That means microwave needed less current than charging mobile
You are better than those (professors) in college
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Although I can understand English, there are many students who understands better with Hindi narration and you can also reach a wider audience with this
Thankyou bhaiya
He's an American based educator.
There are many who dont know hindi too and i am one of them. What abt that
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