How magnets work, demonstrated and explained: from fizzics.org

[@daveshaffer4593]

thank you for taking the time to share your knowledge! Very insightful!

[@fizzicsorg]

Good that it was useful, thanks for the comment.

[@AakashKalaria]

I learned that it was "right hand rule" for the current flowing through a wire. If you make "thumbs up" shape, the thumb represents the direction of the current while curl of fingers represents direction of magnetic force

[@fizzicsorg]

+Aakash Kalaria Hi, yes that's right. I did not use it because I prefer an explanation that relies on as few rules as possible so I stick to the one about the field being clockwise around a wire, however the right hand rule is useful if you need to quickly determine direction.

[@gristlevonraben]

excellent video, Sir.

[@fizzicsorg]

Thank you, I'm glad that was useful.

[@ShawnDypxz]

Awesome and very conceptual video. And Sir Can you make a video on Magnetic permeability in detail and also about the equations involving the magnetization of materials placed inside the coil? Please sir. Thanks

[@fizzicsorg]

Hi, thank you. I will think about your suggestions

[@owen0314]

love your explanation! Awesome!!

[@fizzicsorg]

Thank you

[@PaVIThRa9188]

Wow I like your explanations!!! 1:50 why does magnetic domains come back to original position after external magnetic field removed ? please can you explain that !!! Thank you very much!!!

[@stratproj6214]

Excellent absolutely excellent keep it up

[@fizzicsorg]

Thank you

[@leopardtiger1022]

Very good.

[@fizzicsorg]

Thank you

[@mohammadalshaikhhasan5091]

Thanks Can you help in showing the difference between field intensity H and field density B. I am little confused in there

[@fizzicsorg]

Copied straight from Wikapedia, a good explanation: In electromagnetics, the term "magnetic field" is used for two distinct but closely related fields denoted by the symbols B and H. In the International System of Units, H, magnetic field strength, is measured in the SI base units of ampere per meter (A/m).[4] B, magnetic flux density, is measured in tesla (in SI base units: kilogram per second2 per ampere),[5] which is equivalent to newton per meter per ampere. H and B differ in how they account for magnetization. In a vacuum, B/{\displaystyle \mu _{0}}\mu _{0} and H are the same; but in a magnetized material, B/{\displaystyle \mu _{0}}\mu _{0} and H differ by the magnetization M of the material at that point in the material.

[@mohammadalshaikhhasan5091]

@@fizzicsorg Thanks I read this and many other explanations for B and H. As formulas i do know how they relates (B=uH). What i was searching for is a video explanation. What i learn from your video about about flux and magnatic force was much more than any bock,, simplified and straight. Hope if something about H and B.

[@fizzicsorg]

@@mohammadalshaikhhasan5091 So, in essence, B the flux density describes how strong (or dense) the field is and H describes what effect it has and that depends on the medium. Some materials are more susceptible to a magnetic field than others.

[@mohammadalshaikhhasan5091]

@@fizzicsorg Thanks I sent you email about magnetomotive force F = H×L F = ΦR Is this leads to same formula from you for force (F= NBIL) Thanks

[@heeeheee8058]

U r a genius

[@fizzicsorg]

I'm finding it difficult to disagree, but others might! Thank you

[@sayedhassanphysics8491]

I WANT TO TRANSLATE YOUR VIDEOS TO ARABIC WOULD YOU MIND ?

[@fizzicsorg]

No, I don't mind at all. Thank you.