Bar magnet, Physics

What is magnetic moment of a bar magnet

1. When a bar magnet of pole strength (m) and length (2l) is suspended freely in air,it always turns along the magnetic north (N) and South poles (S) of the earth.

2. This is because the bar-magnet is acted upon by 'a' couple constituted by two parallel forces separated by a distance 2l equal to the length of the magnet.

3. Magnetic moment (M) of a bar-magnet is measured by the product of its pole- strength (m) and its magnetic length (2l)  i.e M=2l

4. Units : Ampere-metre2 (A-m2)

 

 

Posted Date: 10/16/2012 3:11:34 AM | Location : United States







Related Discussions:- Bar magnet, Assignment Help, Ask Question on Bar magnet, Get Answer, Expert's Help, Bar magnet Discussions

Write discussion on Bar magnet
Your posts are moderated
Related Questions
There are five types of modulus  of elasticity (i) YOUNG'S MODULUS OF ELASTICITY (Y (ii) BULK MODULUS OF ELASTICITY (K) (iii) COMPRESSIBILITY (iv) MODULUS OF RIGIDITY


Spectrum and electromagnetic radiations: What is a spectrum? Ans: A spectrum is a group of wave lengths or frequencies. What  are the electromagnetic radiations? Ans:

in water equivalent how the temperature or water and solid equal?

Production of electricity by light: The Photovoltaic Cell or Solar Cell. A photovoltaic cell generates an emf when light falls onto it. Several forms of photovoltaic cell exi

Time Dilation A description in which the phenomenon of time dilation from the special theory of associtively necessarily follows from the idea in which the speed of light is th

Extrusion: It is a metal working process that makes long lengths of uniform cross sectional area from a metal billet by causing the latter to flow under hydrostatic pressure by a

Illustrates some applications of holography? Applications of Holography Holography can be put to many of uses other than recording images. Holographic data storage is a proc

Q. Why the centre of Newton's rings pattern appears dark? The thickness of the air film becomes zero at the point of contact of lens L with glass plate P. Therefore there is no

The opposition offered to the circular motion of bodies like sphere, disc, ring, cylinder etc. on another surface is known as rolling friction.