Multipole Expansion | From Monopoles to Quadrupoles: Electrostatics Demystified |

[@physicstutor]

Here is the google drive link of the hand written note drive.google.com/file/d/173Ff5Qez3OfTA9A7gLZ_eXHQgSB5B7BD/view?usp=sharing

[@amirhoseinmojarrad9200]

please explain what did you say in 37:20 ???

[@physicstutor]

@@amirhoseinmojarrad9200 at 37:20 I have mentioned about deuteron physics problems. This lecture is for undergraduate students. In post graduate syllabus there is a topic called deuteron physics. The quadrupole moment is a very useful tool there.

[@surjitmukherjee7879]

You have made it very simple. Removed all my doubts. Keep it up 👍👍👍

[@thermrm]

Thank you for explaining in English.
Love from Palestine!

[@gw110019]

GOOD DAY PROF. SIR. I HAVE SEEN YOUR VIDEOS AND WISH TO REQUEST FOR NOTE ON ANY THING ELECTROMAGNETIC WAVES

[@soumyadas1614]

Thank you sir. I am a student of your college.

[@physicstutor]

Those who want the detailed hand written notes of this lecture, please write down your e-mail id in the comment box below. I shall mail the notes to you.

[@abbiramirez7467]

Hi! can I have the notes please? [e-mail] thank you!!

[@mafiaumar7621]

Hi sir need ur notes at
[e-mail]

[@elisabethb3534]

[e-mail]
Notes please!

[@sdey54611]

Souvik Dey
[e-mail]

[@sabyasachisen8767]

Sabyasachi Sen [e-mail] Thank you!

[@sadegh5429]

Thank you so much!

[@CristianoRonaldo123-j9j]

Suggestion is don't put song in background please...it decreases focus

[@gualomoment]

thank you for this video brother, you are a real one. greetings from italy 👍👍

[@physicstutor]

Thanks for appreciating.

[@sadegh5429]

Which book is your resource? since all the books that I read make this very complicated

[@physicstutor]

Some well known standard books and my experience

[@maheshnerlekar9791]

you give good start with basics ...keep it up and keep posting to make us enjoy with physics

[@physicstutor]

Thank you

[@krisnendubiswas3374]

Sir I have a question, you said it is valid for only case when r' is very small compared to r so if then we assume a given origin then for that given origin it is only valid for a small region around that origin or is it origin depended, I don't get that assumption and it's consequence seem a little inconsistent

[@physicstutor]

Actually, various multipole terms do depend on the choice of the origin. In general, the lowest non-zero multipole is always independent of the origin. Your question is very legitimate. For example, I can say that the dipole moment generally depends on the position of the origin only if the total charge of the distribution is not zero. However, if the total charge is zero, the dipole is independent of the choice of origin.

[@shahadas907]

Brilliant explanation👍. But, the music is stressful a bit 😁.

[@physicstutor]

Thank you for your opinion. I shall look into this matter in future videos.

[@fernandosanchezquispe4299]

Thank u very much for such a nice explanation.

[@physicstutor]

Thank you for the appreciation.

[@ManojKumar-fr3gw]

In interference of thin film. And ballistic galvanometer. Please make video on them

[@physicstutor]

Please share your valuable suggestions here. Thank you.

[@physicstutor]

@Chayan Adhikary check your mail inbox

[@ManojKumar-fr3gw]

Please make video on. Uniqueness theorm

[@pijushpal9738]

Sir one request
..background music ta na dile valo hoto.. 😊

[@physicstutor]

Ok next time mone rakhbo.

[@iyyamperumal185]

Really useful. Thanks sir

[@sachinkumarhazari9965]

Thank you Sir

[@physicstutor]

Welcome!

[@methuselahkanakam6034]

please can u make it fast I have exam tomorrow

[@sunainasharma31]

Can you plz tell me the definition of planar quadrapole

[@physicstutor]

In 1D, it's like carbon di-oxide molecule & in 2D it's like square. Both are planar. In linear case, suppose -2q charge is at the middle & two +q charges are situated at the two ends. In 2D case you can imagine a square consisting of four charges at the vertices like -q at (-a/2,a/2), +q at (a/2,a/2), -q at (a/2,-a/2) & +q at (-a/2,-a/2)

[@alauddinsheikh2958]

nice

[@sdey54611]

Thank you sir can you make videos on Fourier transform

[@physicstutor]

Thank you for your suggestion, right now I am busy for some reason. I shall make a video soon.

[@sayansagar6868]

Thanku Very much sir

[@FriedmanArt]

Thank you. Please consider removing the background music from your videos. For me it's a distraction.

[@physicstutor]

right now it's impossible, but thanks for the suggestion. I shall remember this for future videos.

[@rmphysics2523]

Thank you sir. Eta khub dorkar chilo...
👌👌

[@saedrahman9629]

What is the channel name

[@physicstutor]

Physics Tutor

[@divyashreedivyashree2096]

Thank you soo much sir❤

[@Mahakaal2025]

Thanks teacher 🤠❤❤

[@rs_2263]

Thank u soo much sir...very helpful video

[@malyuki39]

Thanks a lot

[@ManojKumar-fr3gw]

Please make video on solution of electrostatic and magnetic problems including boundary value problem

[@surjitmukherjee7879]

It's very useful

[@lilrapanzal3147]

Nyc explanation sir😊

[@muhammadruzbianvari106]

thx man love u

[@abbiramirez7467]

this was very very helpful, thank you

[@aqibjaved5315]

Best Sir 💚💚💚👌

[@amirhoseinmojarrad9200]

Hi; can you give me the solution of steps for better understand?
and in 38' to end, what did you say?
you're familiar with dot on problem
and dot around nucleus size problems
i can not understand this

[@physicstutor]

it's deuteron problem. the quadrupole moment is widely used in deuteron physics. For hand written note please go for the pinned comment. I have uploaded the note there.

[@sayansagar6868]

Sir ai chapter er pdf notes achee

[@physicstutor]

Put your e-mail id here and I shall send you the hand written pdf notes.

[@sayansagar6868]

@@physicstutor [e-mail]

[@physicstutor]

@@sayansagar6868 Done

[@shakiltasnimul]

Thanks a lot