H field is also called magnetic field (check Wikipedia and it's links for confirmation) The term "magnetic field" is used by some authors for H field (more often) and by some authors for B field (less often) So, to do away with any ambiguity let's call H field as "Magnetising Field" and B field as "magnetic flux density" or "magnetic induction"
Thank you! This has always been a murky area for me. I am really glad to see Gaussian units falling (too slowly) into oblivion. Arnold Sommerfeld, Atay Kovets and others have pointed out why SI units are preferable to cgs units (which especially cloud the study of electrodynamics). For younger students who have never heard of cgs units, thank your lucky stars!
For students I use this analogy: 1) Water is H 2) water logged is B 3) some materials (wood, W) can become very waterlogged B 4) but other materials (teflon) cannot become waterlogged 5) when the piece of wood W is fully waterlogged B, let's add more water H - nope, wood W does NOT become more waterlogged when water H increases: the wood W has a "maximum waterlog" condition and we already reached it .
The names didn't help me so much, in fact the names are not consistently used. B should be, "Magnetic Field (or Flux) density" and H should be "Magnetising field intensity". I think what is key is this: Both B and H are magnetic vector fields. B has units of flux density, while H is related to current, and other parameters independent of materials, e.g.. H = I /(2pi x r) for a long straight wire, and H = n x I / L, for a solenoid. On the other hands, B depends on the material's magnetic properties, So B = uo x H for free-space, and B = u x H in general.
The H field by Ampere's curcuital law follows an external contour around the electric current (it's like the electric current crosses an imaginary open surface delimited by the H field) unlike the B field which is the opposite, that is the internal magnetic field that crosses an open surface and would be imagined delimited by a loop that carries electric current.
No, not clear at all. You write Magnetising field is 'H' or 'I' then later write H=nI. Also, if you have a magnetising field of a permanent magnet, how is that measured in Amps/meter?
H denotes magnetising field intensity - It is the measure of the magnetising capaability of Field Whereas , M denotes magnetization It measures the extent to which given substance is magnetised by the field More M means substanc eis magnetised more and it has finite magentic dipole moment
Magnetic flux density means magentic flux passing per unit area that is Flux divide by area ..so it is equal to Mangetic induction....B .....Anaother name of B is magnetic flux density
H field is also called magnetic field (check Wikipedia and it's links for confirmation)
The term "magnetic field" is used by some authors for H field (more often) and by some authors for B field (less often)
So, to do away with any ambiguity let's call H field as "Magnetising Field" and B field as "magnetic flux density" or "magnetic induction"
Thank you! This has always been a murky area for me. I am really glad to see Gaussian units falling (too slowly) into oblivion. Arnold Sommerfeld, Atay Kovets and others have pointed out why SI units are preferable to cgs units (which especially cloud the study of electrodynamics). For younger students who have never heard of cgs units, thank your lucky stars!
SI units are in our exam syllabus that is the only reason why us students follow it.
Dude. You are awesome.
This is the best explanation I found on CZcams. Thank You.
Great explained and good choice of topic 👏 , it really helpful 👍
For students I use this analogy:
1) Water is H
2) water logged is B
3) some materials (wood, W) can become very waterlogged B
4) but other materials (teflon) cannot become waterlogged
5) when the piece of wood W is fully waterlogged B, let's add more water H - nope, wood W does NOT become more waterlogged when water H increases: the wood W has a "maximum waterlog" condition and we already reached it
.
damn, makes sense, this is more about the limit of H though, which is due to all the domains of the ferromagnetic material becoming aligned.
The "B" field was used to construct the project ... The center is the most powerful part of a magnet
The names didn't help me so much, in fact the names are not consistently used. B should be, "Magnetic Field (or Flux) density" and H should be "Magnetising field intensity". I think what is key is this: Both B and H are magnetic vector fields. B has units of flux density, while H is related to current, and other parameters independent of materials, e.g.. H = I /(2pi x r) for a long straight wire, and H = n x I / L, for a solenoid. On the other hands, B depends on the material's magnetic properties, So B = uo x H for free-space, and B = u x H in general.
Please clear my doubt in the last line you mentioned the u is it the permittivity of medium or permittivity of object???
If u is the permittivity of material then why do we use uo ( permittivity of medium) in B=uoH ??
And please also tell me that magnetising field depend on the permittivity of medium or material
Thank you!
@@Neetu-Vishwakarma No, H is the magnetising field, which depends only on the current. But B depends on the permitiivity and value of H.
Thank you very much, very helpful 👍🏻
Thanks it is very clear.. u made it very simple
What is difference between H And I
H is used for the external magnetic field that how much it can magnetise the material
I is used for the material that how much magnetic field does it induced
The net magnetic field of material is given by the sum of external magnetic field and the magnetic field due to I
The H field by Ampere's curcuital law follows an external contour around the electric current (it's like the electric current crosses an imaginary open surface delimited by the H field) unlike the B field which is the opposite, that is the internal magnetic field that crosses an open surface and would be imagined delimited by a loop that carries electric current.
Thanks a lot sir ! It really helped.
by the way it is useful to MTech students also thankyou sir.
Very helpful explanation brother.... thank you so much
Thank you so much sir ❤️🙏
Very clear explanation 👌thks
thank you for clearing my long year doubt
Thank you sir clear my doubt
what is magnetic field stregth..and magnetising field stregth
B is also called magnetic flux density. H is also known as magnetising fornce.
No, not clear at all. You write Magnetising field is 'H' or 'I' then later write H=nI. Also, if you have a magnetising field of a permanent magnet, how is that measured in Amps/meter?
Hey thankyou very much.
Shandar #rajeshphysicseducation
thank you for explaination
Here n refers to?
THANK YOU SO MUCH SIR
THANKS ...
What is symbol of magnetic field intensity?
Magnetic field intensity is denoted by B
Unit Tesla
Magnetising field intensity is H
Unit A/m
@@understandphysics9828 but in book both H n B represent magentic field intensity...
@@soumyaranjanbehera641 i dont know abt which book ..but
how there can be two symbols for one quantity ?
Obviously there are two different quantities
@@understandphysics9828 thanks 😊
Awesome 👌
Sir what is difference between M and H
H denotes magnetising field intensity - It is the measure of the magnetising capaability of Field
Whereas , M denotes magnetization
It measures the extent to which given substance is magnetised by the field
More M means substanc eis magnetised more and it has finite magentic dipole moment
Thank u 😀
Thanks a lot
Tq sir
thanks
Sir the what is magnetic flux density
And by what symbol it is denoted by
Magnetic flux density means magentic flux passing per unit area that is Flux divide by area ..so it is equal to Mangetic induction....B .....Anaother name of B is magnetic flux density
You saved me bb
🙏🏼🙏🏼🙏🏼👌
Plzz check it .
yeah it confused me a lot
Nyc
Bhai galat naming ki B aur H ki
Please review "coral Castle Florida
PRIMATIVE!!
Tq sir