Physics hand rules explained
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- Опубліковано 2 лип 2024
- When dealing with electromagnetism, there are a number of hand rules, to make sense of the directions of the various dimensions.
This video makes sense of all those rules
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this makes so much more sense now. before I was completely lost looking at Krahn academy videos, people online trying to explain it in comments, googling, google images (sometimes that's easier to understand), and other things but this is the first thing I have understood. its even more amazing i was able to understand what hes talking considering i am in 7th grade and have only learned lab safety, planets, and scientific method, thanks to covid-19.
Glad it helped
yeah im the same. i tried to understand it from the textbooks but it just made no sense
enjoy ur youth
"As you can see, my middle finger is pointing towards you." 3:28
Why you gotta do us like that💀💀💀
dude i laughed so hard at this XDDDD
I dont know why but i wish you made the blue ice cream bucket North and the pink ice cream bucket South.
Kowalski X I thought I was so silly for wanting that 😂😂
Yeah wtf. Because he's a scientist not a hermetic philosopher. If he was he would have had the North as blue. Like seriously does Saint Nick turn blue when he goes South as Santa? Noooo. Scientist are spiritually flawed.
Same😭
Never related so much 😂
lmao
Excellent explanation! I especially like the palm rules - like you say, much more intuitive and easier to remember.
Thanks for posting.
No gonna lie, I was so lost before this. Thank YOU
I feel the same. Event though he pointed his middle finger toward me.
Thank you, this video is really helpful!
thankyou this really helped me understand the difference between right hand grip for solenoids and general wires
Awesome video thanks so much sir, you’re a gentleman!
I just found your channel and I’m so excited! I was too proud and too much of a rocker in the 90s to even wanna pay attention in grade 9/10/11 physics. So I’m more than excited to have found your channel now, when I’m determined to understand the basics of physics.
Thanks 🤓
@@PhysicsHigh you’re welcome!
Thanks sir I was earlier very confused in left hand and right hand rule but now it's totally clear nice explanation
Finally! A great explanation! Thank you! Thank you! Thank you!
this video was very handy, Thanks!.
LORENTZ FORCE, GO!
thanks a lot, i wish i knew these rules better a decade ago, they would save me a few points & headaches. flemings was easier to visualize
thank you, I was so lost before this
very good explanation.....very helpful
wow this is amazing!
thanks for making this amazing video
I use *FBI* on my thumb, index and middle fingers to remember Flemming's hand rules, since those 3 letters conventionally represent the _Force (motion), Magnetic field & Current (induced) respectively_
THANK YOU SO MUCH FOR THE VID OMG
Thank you!!!
wow brilliant man
Thank you sir.
Great!
Thanks
Tq sir no confussion now
magnetic force people,natures force
Thanks very much🤝
Super sir.......
As an electrical teacher. The single best thing U can do to better ur understanding of electricity is ohms law. The second best thing is the right hand rule. If u can master those two elements, u can solve anything
Thank professor
Thank you sir
So there's a corellation between the left Hand rule and right Hand rule. isn't it ? let's say we are using the right Hand for generating Motor ( Force, direction current and magnetic field), by the time we are applying right Hand rule into Motor (let's say asynchronous Motor), there'll be induction into rotor which cause EMF, and we are applying left Hand rule into the rotor to know the direction of induced current. am i right?
best explanation thanks
Easy to understand.
this helped so much :)
Glad it did 😎
Thanks a lot. Excellent
Thanks
I think your palm rule is AWESOME!
Thanks!
can u explain the solenoid hand rule
Question about motors. When is maximum force experienced by a coil in a motor?
Broad question
Force is dependent on field, current and wire length but torque needs to be considered which also depends on rotor angle with magnetic field.
Check my video. ua-cam.com/video/239HeLGur1U/v-deo.html
Love this vid!!!
glad ;-)
@@PhysicsHigh me too helped me a lot
You are a life saver
Glad it helped.
It's good
Thank you so much for this explanation, you have just taught me more in a 10 minute video the my teacher in 5 weeks
Great video! ... Thank you ... note: Flemings left-hand rule appears to be a scientific way to "flip-off" the viewers. (:>0
Oh god we need the palm rules so much
Have my second physics mock tomorrow 🙃
why the magnetic field direction goes from North to South or from Pink to Blue @ 2:44?
I think the palm-rule is much easier to understand and remember, will use this for my students from now on!
When you say direction of current, are you strictly using conventional current flow for all of these examples?
Correct. I always use ‘conventional’ for current. I’ll specifically use ‘electron flow’ for the other term.
@@PhysicsHigh awesome thank you
@@PhysicsHigh thank God someone does because this makes all the difference.
Unless you backhand someone :) ... Thanks for sharing.. Or when shaking hands with someone, the direction you move your hand is the direction of the palm
goated
I don't think you understand how you have saved my life
Pretty strong response 🤓 But thanks for the feedback
Could you please do a video on the 2018 HSC paper when it is out? I am doing it tomorrow and I want to be able to estimate how I went
That’s the plan.
thanks watching this the morning of physics hsc exam
Good luck
I think you need to clearly define which concept you are using the conventional current flow (positive to negative) vs electron flow concept (negative to positive flow) this messes up so many people
I always wonder why can’t we have someone like him as lecturer . Been wasted 1 hr in class listen to someone who doesn’t know how to teach and explain , but sort it out with video under 10 mins .
what about main operation of Nikola Tesla's magnifying amplifier, hysteresis
if my first finger is pointing towards me, is the direction of magnetic field into or out to the paper? please answer!
neither, for both Flemings left and right hand rule, the current is perpendicular to the magnetic field. ( i suppose u mean “towards me” means out of paper)
and also the direction of current does not determine the direction of magnetic field, unless ur referring to right hand grip rule
Current in a motor doesn't just go straight. Needs more context and illustration.
I just love you man,🥰😍
Awww. Thanks 😀
Are all these rules assuming conventional current flow?
Yes
@@fergusclark8854 ok thanks
I am confused between the use of Fleming right hand rule and Fleming left hand rule
he gooooooooooooooooooood at teaching
Thankyou.
You made a mistake when holding the coil. Magnetism does not flow TO the north pole, it flows to the south pole (which is what our so-called 'North pole' is, and which you later showed with the tubs). Please correct this error.
It’s not an error. The magnetic field lines are continuous. So outside the solenoid the field lines do go from N to S. Inside the coil they go from the south end to the north. Check my video on solenoids and you will see what I mean.
@@PhysicsHigh outside a magnet the magnetic lines go from N to S but inside a mgnet tge go from S to N,right?
Can the "hand rules" be stated mathematically without any reference to the human hand?
U can use cross product and represent in terms of i j and k in a 3d system
In a three dimensional vector space you can just use a 3x3 matrix with the three unit vectors i,j and k as the first row, the three components of the first vector as the second row and the three components of the second vector as the third row. Then you calculate the determinant of the matrix. As an example, in order to compute i x k you use a 3x3 matrix M with (i, j, k) as the first row vector, (1, 0, 0)=i as the second row vector, and (0, 0, 1)=k as the third row vector. Then you calculate the determinant with the usual cofactor expansion Det(M)= i (0-0) - j (1-0) + k (0-0) and this is equal to - j. Note that if you want to compute k x i instead, you have to switch the second row and the third row, and you'll get j (you can easily prove it by yourself)
I didn't get it. I am feeling so stupid.
I got a bit distracted by the tie 🤔
After watching this video, I can only conclude...
I didn't understand shit.
Just use a single rule and that's it. The numerous rules is just making it more confusing. Keep the fleming right hand rule it is the basic one.
Weird my teacher taught the exact opposite hands for each rule
He has a picture of Nicholas Tesla on his coat 😃
Why is it that when a wire moves through a magnetic field the current will move one way, but if the current is forced in the same direction the wire will move in the opposite direction?
Short answer : Lenz Law and conservation of energy
@@PhysicsHigh Thank you for the answer, I really appreciate it. If it’s not too much trouble, could you please let me know the long answer? (I’m in my senior year for a bachelors in engineering and might understand a little)
In essence its about Faraday's Law and Lenz Law - I have a number videos that go through this in greater detail. Look up Faraday's Law and Lenz's Law on my channel. Also look at my videos on BACK EMF. But in essence think of it this way if ...
Using a DC motor for example, this works due to the the force on a current bearing wire, in this case a loop of wire. The direction being determined by the RHR
Since this loop is rotating , is experience a change of flux. This results in an emf (voltage) that opposes this. Again a hand rule, but this time in the opposite direction. This in essence limits the motor, preventing it from speeding up. If, the change of flux caused an emf in the SAME direction, this would INCREASE the current. This would increase the force on the wires and thus would speed up to infinite speeds. This in essence is creating energy which violates the conservation of energy.
Hope that helps
@@PhysicsHigh This helps a lot, thank you! I know that when you have a spinning motor that back EMF is always an issue (or a useful feature in the case of regenerative breaking) and that if you have a magnet falling through something like a copper pipe or a coil of wire you get an opposing magnetic field due to how inductors work. It make sense in pieces, but for some reason it gets confusing when looking at it in this specific viewpoint. Again, thank you for your help!
Yaaa..... i have no chance
huh?
Why this video isnt full spamed by mgr fans
Now explain why they are going in the direction they are, and not in the opposite direction.
Thank you!!! It’s driving me crazy and I can’t find an explanation!!
So why can't we use this physics to drive our UFO type craft through space or even air but not needing an atmosphere to do the flying...? We have to already have ''true flying saucers'' with this super current windings all around the saucer and up around also with only breaks for doors etc... I firmly believe we (government) already is using these in Area 51 and Area 52 also... i bet a hundred dollar bill...
This is a high school physics video...
The method of explanation you are using is a good old inferior method. You must explain in the form of vishual graphical animations instead of just talking.