This is fantastic! I especially like the way you describe the substitutions in the formulae. I don't have to pause the video to search out why the variables in the formula suddenly changed. Allowing me to stay focused on the subject. No one else does this! Thank you.
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In your video about Maxwell equations you said that only MOVING charges create magnetic field. So, in permanent magnet should be permanent current, that creates this magnetic field???
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I'm confused about the direction of the Lorentz force. If my left middle finger goes from left to right and my left index finger does toward the screen, my thumb points downward, not upward. The open right hand rule backs this up: if my thumb (current) goes from left to right and my fingers (magnetic field) go toward the screen, my palm (force) also points downward.
index finger = magnetic field, thumb = force, middle finger = current (direction of positive charge flow). each of those three quantities are vectors whose direction is the direction your finger points in :) if the question talks about negative charge moving left then you must make sure to point your middle finger to the right
@@loainakhly how ?, it's a negative charge so the magnetic force is reversed. just put your fingers into the screen with a thumb to the left of your right hand. The applying force opposes your palm direction
Ammeter in Parallel to measure current , how can that be possible , we use Voltmeter in Parallel and Ammeter in series to measure Voltage and Current respectively
@@wubwub616 No. It depends on the material but it's not a constant, it also depends on the detail. In a semiconductor doping the material will change the carrier density, carrier density might also depend on the temperature etc.
No you use the LHR for the force on a positive charge, and use right for electron but honestly just use the LHR for all of them and when encounter an ele just pretend the current is going the opposite directing while assuming it acts like a proton
@@iamnotalive1155 yeah exactly, that's what I thought. Thanks for clearing it up. I've been told to use the RHR only when finding the direction of the induced current.
Actually not a good explanation without context and reference to common applications. This is the abiding 'disease' of so-called 'pure' mathematics and its practitioners and explains why so few invent anything. Only when they cross over to the applied field does this occur. Edwin Hall, like his near contemporary Ernest Rutherford, always sought actual uses for phenomena they discovered and frequently made their discoveries in the process of working with things on benches and not chalk on blackboards.
eBook: en.fufaev.org/physics-equations-book
Paperback: tinyurl.com/physics-paperback
Hardcover: tinyurl.com/physics-hardcover
best video I have seen so far about Hall Effect. Thank you very much.
Thanks, my teacher could absolutely not explain this in a way that made sense
Oh hi Louise
This is fantastic! I especially like the way you describe the substitutions in the formulae. I don't have to pause the video to search out why the variables in the formula suddenly changed. Allowing me to stay focused on the subject. No one else does this! Thank you.
Lovely explanation, much appreciated. Great series.
Thank you very much for this brilliant video.
Thanks for this amazing video I thought that I would never understand it
It`s so useful, Thank you
perfect video thank you
I don't usually comment, but the explanation in this video deserves on oscar!
thank you!! 🤩
Very simple and nice video, ty
Thank you for your comment!
I explained it in a much better and simpler way.
ruclips.net/video/DtIz_HACSPI/видео.html
Very good video👍
This is brilliant. Thank you SO much. You explain things so clearly and the graphics are super helpful. Thank you, this is so appreciated.
Thanks for the motivating feedback! Greetings from Germany
Best explanation sir
Thank you very much, Siddarth ☺
what a great explanation. Thank you very much!!
perfect
Thank you for making this video. ❤️✌️
You're welcome, Mendhe!
You can also check out my physics website: en.universaldenker.org
What if our charge carriers are positive charges?
Constructive explanation
Thank you, r'!
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Interesting
Great explanation and really helpful.
Hey Samluel! Thank you for your comment!
How can you know the magnitude of magneticfield
3:40 How can we siubstitute v by (L/t) even though that the electrons do not have an uniform motion?
It's in the case of equilibrium
its a gross statistical "average"
they are not accelerating since vertical forces are at equilibrium and electrons in a current aren't accelerating
In your video about Maxwell equations you said that only MOVING charges create magnetic field.
So, in permanent magnet should be permanent current, that creates this magnetic field???
Nope, the spin of the electrons creates the permanent magnet
Great, thank you
You're welcome, Petr :)
Check out my physics website: en.universaldenker.org
Very very superb explanation
Thank you very much!
very good, thanks
Thank you!
Feel free to join the polls I'm doing in the community tab. There you can vote for the next video topic:
ruclips.net/user/universaldenker-physicscommunity
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I'm confused about the direction of the Lorentz force. If my left middle finger goes from left to right and my left index finger does toward the screen, my thumb points downward, not upward. The open right hand rule backs this up: if my thumb (current) goes from left to right and my fingers (magnetic field) go toward the screen, my palm (force) also points downward.
index finger = magnetic field, thumb = force, middle finger = current (direction of positive charge flow). each of those three quantities are vectors whose direction is the direction your finger points in :) if the question talks about negative charge moving left then you must make sure to point your middle finger to the right
Oscar needs you
🤩😍
Well done
thanks!
Current is not equal to electrons current?
Opposite
is F= Qv x B since it is cross product why is the left hand rule used and not right hand
@@loainakhly how ?, it's a negative charge so the magnetic force is reversed. just put your fingers into the screen with a thumb to the left of your right hand. The applying force opposes your palm direction
@@ikitashou1490 you are right I didn’t notice the negative charge, deleted my earlier comment.
literally saved me
Nice! ☺
Ammeter in Parallel to measure current , how can that be possible , we use Voltmeter in Parallel and Ammeter in series to measure Voltage and Current respectively
same question
i got lost when you brought in the small n
oopsi, ask me a question if you have one or rewind the video^^
@@fufaev-alexander is the n always a constant depending on the metal?
@@fufaev-alexander I'll take that as a yes
@@wubwub616 No. It depends on the material but it's not a constant, it also depends on the detail. In a semiconductor doping the material will change the carrier density, carrier density might also depend on the temperature etc.
this melted by brain
@UCjSaw-zz3wqrY6sxvm3qMQQ samaghta kea he tu apne ap ko
@@uzair5001 tera baap
too hard or too good?
man used left hand rule instead of right 💀
haha. In German it's easier: there you can't make the mistake because it's called "three-finger rule" and not "Right-hand rule"
For an electron, you can use your left hand. for a proton you use your right hand
wait I don't get it, shouldn't we be using the LHR to find the motor effect on the electron placed in a B field?
No you use the LHR for the force on a positive charge, and use right for electron but honestly just use the LHR for all of them and when encounter an ele just pretend the current is going the opposite directing while assuming it acts like a proton
@@iamnotalive1155 yeah exactly, that's what I thought. Thanks for clearing it up. I've been told to use the RHR only when finding the direction of the induced current.
Actually not a good explanation without context and reference to common applications. This is the abiding 'disease' of so-called 'pure' mathematics and its practitioners and explains why so few invent anything. Only when they cross over to the applied field does this occur.
Edwin Hall, like his near contemporary Ernest Rutherford, always sought actual uses for phenomena they discovered and frequently made their discoveries in the process of working with things on benches and not chalk on blackboards.
I explained it in a much better and simpler way.
ruclips.net/video/DtIz_HACSPI/видео.html