Magnetism Assignment Help

Assignment Help: >> Physics >> Magnetism

The molecular theory of magnetism was given by Weber and modified later by Ewing. According to that theory -

Every molecule of a substance is a complete magnet in itself. However, in a magnetized atom the molecular magnets are randomly oriented to give zero net magnetic moment. On magnetizing, the molecular magnets are realigned in a specific direction leading to a net magnetic moment.

2325_Magnetism.png

BAR MAGNET: A bar magnet consist of two equal and opposite magnetic pole separated by a small distance. Poles are not exactly at the last. The smallest distance between two poles is called effective length (Le) and is less than its geometric length (Lg).

 

443_Magnetism1.png

 (1) Directive properties: When a magnet suspended freely it stays in the earth's N-S direction (in magnetic meridian).

1776_Magnetism2.png

(2) Monopole concept: If a magnet is Broken into number of pieces, each piece converts into a magnet. This in turn implies that monopoles do not stable.

 

(3) For two rods as shown, if both the rods attract in case (i) and doesn't attract in case (ii) then, B is a magnetic and A is linear iron shield. Repulsion is sure test of magnetism.


 

 1066_Magnetism3.png

 

 

(4) Pole strength (m) : The strength of a magnetic pole to attract magnetic materials towards itself is known as pole strength.

(i) It is a scalar quantity.

(ii) Pole strength of N and S pole of a magnet is conventionally represented by +m and -m respectively.

(iii) It's SI unit is amp × m or N/Tesla and dimensions are [LA].

(iv) Pole strength of the magnet depends on the nature of material of magnet and area of cross section. It doesn't relays upon length.

1017_Magnetism4.png

(5) Magnetic moment or magnetic dipole moment  : It represents the strength of magnet. Mathematically it is described as the product of the strength of either pole or effective size. i.e.1780_Magnetism6.png  

(i) It is a vector quantity directed from south to north.

(ii) It's S.I. unit amp×m2 or N-m/Tesla and dimensions [AL2]

969_Magnetism5.png

Email based Physics assignment help - homework help at Expertsmind

Are you searching physics expert for help with Magnetism questions?  Magnetism topic is not easier to learn without external help?  We at www.expertsmind.com offer finest service of Physics assignment help and physics homework help. Live tutors are available for 24x7 hours helping students in their Magnetism related problems. We provide step by step Magnetism question's answers with 100% plagiarism free content. We prepare quality content and notes for Magnetism topic under physics theory and study material. These are avail for subscribed users and they can get advantages anytime.

Why Expertsmind for assignment help

  1. Higher degree holder and experienced experts network
  2. Punctuality and responsibility of work
  3. Quality solution with 100% plagiarism free answers
  4. Time on Delivery
  5. Privacy of information and details
  6. Excellence in solving physics queries in excels and word format.
  7. Best tutoring assistance 24x7 hours

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd