EMF and flux explained
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- Опубліковано 30 вер 2024
- An explanation of flux and how a changing flux leads to an EMF
Covers Faraday's Law too
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I still don't understand how does changing flux produce emf
يمكن انا الطالب الوحيد يلي جاي من حصه زياد رواشده 😂♥️
وانا معك
+++1
The best video regarding flux in all of UA-cam. Thanks a lot. I'm only in 10 th yet understood it perfectly. Keep up the good work
True
Such a beautiful explanation.
From 🇮🇳 ❤
Really helpful and it finished all my confusing. Thanks a lot
What determines the magnitude of flux? And how much energy escapes from the system because of flux?
Is flux the same as friction?
These are the questions i have had in my head all week. Hope the video answers them.
Love the rain analogy.
Absolutely fantastic! I don't think I've understood a physics concept faster. I hope your students realize how lucky they are to have you. Thank you so much.
I have a BSEE degree which obviously included multiple classes in high level electromagnetic field and calculus....in the 5 minutes it took to watch this video i now understand the physical component of this concept better than i ever have...bravo sir!
This is a great straight forward way of explaining this concept. Thank you.
من طرف زباد الرواشدة :)
Give this man a medal!
This is the best explanation!!!!
Can you please help with the following questions:
1) every demo on this topic uses a rotating coil or copper loop or a magnet fixed to a rotor and facing a stator of copper coils. Sometimes a magnet is pushed into and pulled out of the coil. The question is: Is one method superior to the other
2) along your line of rain analogy. What if instead of rain I had a powerful garden hose opined right in the middle of the loop as you rotate it. And compare with giant drum of water that when poured consumes the entire area of the loop. Assuming the exact same amount of water sits through the loop is one type of flux preferred k we the other )super concentrated bs large surface area?
Number 2) I assume you mean what if it was between 2 small magnets which produce a narrow B line. Well it doesn’t change much because eventually flux is still going to equal 0. It just means that it would take a little longer to actually start making a difference from maximum flux
Clear concept of flux❤ thank you!
Such a great explanation, keep it up
Fantastic explanation. Thank you.
Thanks to explan
Hi
I was wondering if you could give us a video on EMF vs Potential Difference. Or just an explanation.
Thanks
Actually the two are the same.
Emf is the old term but we now understand it as voltage or potential difference
Very helpful, thank you!
Great analogy - thanks.
tx my confusion was now clear
Thank you sir for making the concept seem so much more easier.
BUT> what if you had 2 loops to collect rain, both loops perfectly aligned (as in a wire coil)? Would the flux double? You are still collecting the same amount of rain, but your 3D area has doubled. Would the RATE of flux change stay the same or double?
If two like sides (two magnetic north polarity sides or two magnetic south polarity sides) of wafer or ring magnets are forced together with super glue or epoxy cement, would this create a high density or concentrated magnetic flux field? If so, would the flux field produce a scalar wave energy field around the two magnets glued together? If anyone knows, please leave me a reply. If the two magnets glued together are placed on a sheet of copper, would the concentrated magnetic flux field energize the copper? If the two magnets glued together were placed inside the resin of an orgonite pyramid or orgonite charging plate, would the magnetic flux field of the two magnets cause the orgonite to convert positive ions into negative ions?
Thankyou. I still didn't understand the negative part.
Can I ask what is in the magnetic flux lines? what they contain?
I like u....im subscribing liking and all there is to it
Thankuu soo much for this It helps vryyy muchhh😊
tnx, really helpful to understand the concept.
Brilliant ❤
Yes. Finaly. Now i understand. 🥇
THANK YOU SO MUCH SIR FOR THE WONDERFUL EXPLANATION...... KEEPING TECHING LIKE THIS FOR US.....
Thanks and welcome
thanks a lot for this intuitive explanation
Love from iNDIA 🇮🇳🇮🇳
Thank you so much sir 🙏
BEST EXPLANATION OF FLUX EVER!
wow. such an awesome pedagogy
thank you, this is what I needed
How rate of change of flux is maximum when flux is zero. Plz explain it🙏
I thought I did. When flux is zero on the graph, the slope of the graph is at a maximum. That slope is the rate of change of flux.
Did he say the 3rd graph is the EMF?
You are a great teacher, thanks for your video!
Excellent ... well done ...
beautiful explanation
This is a great analogy
super useful thanks
Thank you for posting this video. My textbook does not explain it properly.
This is so clever
YOU ARE A LEGEND
Emf stands for electro magmetic field right ?? Does this emf represents the electron motion in the atom so negtive means electron nearest the next atom and postive means the electron farthest away from thr next atom and this change is what causes the production of emf radiation
force
It stands for electromotive force... The idea is that when you have an induced electric field (so one created by a change in magnetic flux) it will create a current. A current is basically the motion of electrons, and to move the electrons there must be work done. The current moves over a closed path: consider the work done to move a unit charge over the closed path as the emf. It gets confusing, because the emf is not actually a force, it is a measure of work per unit charge, and therefore has units Nm/C or simply Volts. It is an example of unfortunate naming in physics.
what is that delta t in the denominator , is it time?
Yes. The delta just means “change in”.
Thank you so much for this video! Such a clear explanation.
Glad it was helpful!
neat
❤️
love the analogy
thanks
What is this emf?
EMF is a voltage or potential difference
Hello sir, around about 2:56, for the graph for flux, instead of oscillating between the positive and negative region shouldn't it always be positive? As flux is purely just a measure of the amount of field lines threading through the loop?
Please reply ... I also having same doubt
I think you're right. I've never seen "negative rain" in a bucket ;-) But mathematically there is a change of sign after a rotation of 1 pi in a sine-function.
The cosine vector changes from 0° to 90° to 180° to 270° and back to 360° which is equal to 0°. Substitute the angels and that's why it oscillates through positive and negative side.
Thank you so much!
Helps so much!!!
THIS SAVED ME ;-; THANK YOU
You’re welcome
@@PhysicsHigh plz can you explain further why the rate of change for magnetic flux start from maximum
I can't understand why it starts at the maximum value!
@@mohamedtaha2025 If you graphed a tangent to the flux function, you would see that after 0 the gradient of the function decreases until it reaches 0 (local max)
Finally i understand this lesson thank you