मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Define magnetic intensity. - Physics

Advertisements
Advertisements

प्रश्न

Define magnetic intensity.

व्याख्या
Advertisements

उत्तर

The ratio of the strength of the magnetizing field to the permeability of free space is called magnetic intensity. 

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 11: Magnetic materials - Short Answer II

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

State formula and S.I. unit of Magnetization.


Find the magnetization of a bar magnet of length 10 cm and cross-sectional area 4 cm2, if the magnetic moment is 2 Am2.


Give two points to distinguish between a paramagnetic and a diamagnetic substance ?


A long, straight wire carries a current i. The magnetising field intensity H is measured at a point P close to the wire. A long, cylindrical iron rod is brought close to the wire, so that the point P is at the centre of the rod. The value of H at P will ______________ .


What is the magnetization of a bar magnet having a length of 6 cm and the area of cross-section 5 cm2?


A magnetic material of susceptibility 3 × 10−4, and magnetic intensity is 4 × 104 Am1. Then The magnetization in the units of Am1 is ______.


What does the ratio of magnetization to magnetic intensity indicate? 


A solenoid has a core of material with relative permeability 500 and its windings carry a current of 1 A. The number of turns of the solenoid is 500 per meter. Calculate the magnetization of the material. 


Explain the magnetization of a material. 


Derive the relation between magnetic field intensity(H) and magnetization(M) for a magnetic material placed in a magnetic field. 


The magnetic susceptibility of a paramagnetic material at - 73°C is 0.0075. Its value at - 173°C will be ______.


The magnetic susceptibility is given by ______


A steel wire of length I has a magnetic moment M. It is then bent into a semicircular arc. The new magnetic moment is ______.


Relative permeability of nickel is 550, then its magnetic susceptibility will be ____________.


A solenoid has core of a material with relative permeability 500 and its windings carry a current of 2 A. The number of turns of the solenoid is 500 per metre. The magnetization of the material is ______.


A bar magnet has coercivity 6 x 103 Am-1. It is desired to demagnetise it by inserting it inside a solenoid 10 cm long and having 40 turns. The current that should be sent through the solenoid is ____________.


The permeability of a metal is 0.01256 TmA- 1  What is its relative permeability?


Two parallel wires of equal lengths are separated by a distance of 3m from each other. The currents flowing through first and second wire is 3A and 4.5A respectively in opposite directions. The resultant magnetic field at the mid-point of both wire is (µ0 = permeability of free space).


A cylindrical magnetic rod has length 5 cm and diameter 1 cm. It has uniform magnetization `5.3 xx 10^3 "A"/"m"^3`. Its net magnetic dipole moment is nearly `(pi = 22/7)`.


What is the magnetization of a bar magnet having length 5 cm and area of cross section 2 cm2? (M = 1 Am2)


If Mz = magnetization of a paramagnetic sample, B external magnetic field, T = absolute temperature, C = curie constant then according to Curie's law in magnetism, the correct relation is ______.


The magnetic susceptibility of paramagnetic materials is ____________.


The magnetic moment produced in a sample of 2 gram is 8 x 10-7 A/m2. lf its density is 4g/cm3, then the magnetization of the sample is ____________.


The variation of intensity of magnetization (I) and applied magnetic field intensity (H) for three magnetic materials A, B, C are shown in the graph. The material A is ____________.


Find the intensity of magnetization of a magnet of moment 4 Am2 which weighs 50 gram. (Density of the material of a magnet = 5000 kg/m3)


Magnetization of a sample is ______.


Two parallel conducting wires of equal lengths placed distance 'd' apart carry currents 'I1' and 'I2' respectively in opposite directions. The resultant magnetic field at the midpoint of both the wires is ______.

0 = permeability of free space.)


Magnetic intensity is given by ______.


If `vec"H"` = magnetic intensity, `chi` = susceptibility, magnetic moment per unit volume `vec"M"` equals ______.


One can define ...A... of a place as the vertical plane which passes through the imaginary line joining the magnetic North and the South–poles. Here, A refers to ______.


The ratio of intensity of magnetisation and magnetising field is called ______.

Susceptibility is positive and large for a ______.

The magnetic susceptibility for diamagnetic materials is ______.

Among which of the following the magnetic susceptibility does not depend on the temperature?

The earth behaves as a magnet with magnetic field pointing approximately from the geographic ______.


Magnetic permeability is maximum for ______


What are the dimensions of χ, the magnetic susceptibility? Consider an H-atom. Guess an expression for χ, upto a constant by constructing a quantity of dimensions of χ, out of parameters of the atom: e, m, v, R and µ0. Here, m is the electronic mass, v is electronic velocity, R is Bohr radius. Estimate the number so obtained and compare with the value of |χ| ~ 10–5 for many solid materials.


What is magnetic susceptibility?


A bar magnet has length 3 cm, cross-sectional area 2 cm3 and magnetic moment 3 Am2. The intensity of magnetisation of bar magnet is ______.


The dimensions of magnetic intensity are ______.


The magnetization of a bar magnet of length 4 cm, cross-sectional area 1 cm2 and magnetic moment 2 SI units is ______.


The relation between relative permeability (`mu_r`) and magnetic susceptibility (`chi_m`) is:______.


State SI unit of Magnetization.


The magnetic susceptibility of iron is 5499. The relative permeability of iron will be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×