Magnetism - basic concepts, Physics

Magnetism - Basic concepts:

1. Pole strength: The ability of a pole  of  a magnet to attract or repel another magnetic pole is called its pole strength. Units : A-m

2. Magnetic Permeability : Magnetic Permeability ( m ) of a medium is defined as its ability to allow the magnetic lines of force to pass through it or to  allow itself to be influenced by magnetic field.

Units : Henry/meter. 

3. Relative Permeability :The ratio of the permeability of a medium to the permeability of free space is defined as 'relative permeability' ( m r ). Relative permeability is a ratio, it has no units.

4. Unit magnetic pole : The unit magnetic pole is defined as that pole which repels an identical pole at 1 meter distance with a force of 10-7 N.

5. Magnetic field induction (or) Magnetic flux density : Magnetic field induction or magnetic flux density is defined as the magnetic flux passing through a unit normal area = weber/(meter)2. = tesla 

6. Magnetic field induction due to a magnet at point 

The magnetic field induction due to a magnet at a point is  defined as the force acting on a unit north pole   placed at the point. Units : N/A - m

7. Intensity of magnetic field: The intensity of a magnetic field (H) at a point  is defined as the force acting on a unit north pole placed at the point, independent of the medium.  Units: A/ m

8. Magnetic Moment (M): Magnetic moment (m) of a bar magnet is measured by the product of its pole strength (m) and its magnetic length.

 

Posted Date: 10/15/2012 9:30:16 AM | Location : United States







Related Discussions:- Magnetism - basic concepts, Assignment Help, Ask Question on Magnetism - basic concepts, Get Answer, Expert's Help, Magnetism - basic concepts Discussions

Write discussion on Magnetism - basic concepts
Your posts are moderated
Related Questions
Materials, which provide a path to the magnetic flux, are classified as (A) Insulating materials. (C) Magnetic materials. (B) Semi conducting materials. (D) Die

Explain Gauss's law in electrostatics? 1C of charge is same to the charge of n number of electrons in magnitude. What is the value of n? What happens to the force between t



What do you mean by the ratio of the frequency of fourth overtone to the fundamental frequency of a stretched string?

Number of neutron in C 12   is (1)6 (2)7      (3)8 (4)9 Ans: (1)6

Hoop conjecture (K.S. Thorne, 1972): The conjecture (as still unproven, though there is substantial evidence to hold up it) that a nonspherically compressed, nonspherical obje

It is a mathematical explanation of the disturbance prepared by a ray. For a string, the wave function is a distance for sound rays. It is a density or pressure fluctuation while f

It consists of two semis circular plates. One is of quartz and other is glass plate joined together along the diameter. The quartz semi circular plate is a half wave plate whose

Solid block type construction of Lead acid batteries: In the solid block type battery the electrolyte is completely absorbed into a compressed block consisting of porous plates