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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

State SI unit of Magnetization.

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प्रश्न

State SI unit of Magnetization.

अति संक्षिप्त उत्तर
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उत्तर

The SI Unit of Magnetization is Am−1 in SI system.

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पाठ 11: Magnetic materials - Long Answer

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संबंधित प्रश्‍न

The magnetic moment of a magnet of dimensions 5 cm × 2.5 cm × 1.25 cm is 3 Am2. Calculate the intensity of magnetization.


State formula and S.I. unit of Magnetization.


What is Magnetic intensity?


Which of the following pairs has quantities of the same dimensions?
(a) Magnetic field B and magnetising field intensity H
(b) Magnetic field B and intensity of magnetisation I
(c) Magnetising field intensity H and intensity of magnetisation I
(d) Longitudinal strain and magnetic susceptibility


The magnetic intensity H at the centre of a long solenoid carrying a current of 2.0 A, is found to be 1500 A m−1. Find the number of turns per centimetre of the solenoid.


The moment of a magnet (15 cm × 2 cm × 1 cm) is 1.2 A-m2. What is its intensity of magnetization?  


Define magnetic intensity.


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 ______.


An iron rod is placed parallel to magnetic field of intensity 2000 A/m. The magnetic flux through the rod is 6 × 10−4 Wb and its cross-sectional area is 3cm2. The magnetic permeability of the rod in `"Wb"/("A" - "m")` is ____________.


An electron moves in a circular orbit with uniform speed v. It produces a magnetic field B at the centre of the circle. The radius of the circle is [µ0 = permeability of free space, e = electronic charge]


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 ______.


An iron rod of cross-sectional area 6 sq. cm is placed with its length parallel to a magnetic field of intensity 1200 Alm. The flux through the rod is 60 x 10-4 Wb. The permeability of the rod is ______.


Coercivity of a magnet where the ferromagnet gets completely demagnetized is 6 x 103 Am-1. The minimum current required to be passed in a solenoid having 2000 turns per metre, so that the magnet gets completely demagnetized when placed inside the solenoid 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 ____________.


A magnet of magnetic moment 6 Am2 weighs 65 g. The density of the material of the magnet is 6500 kg/m3. What is the magnetization?


A magnetizing field of 5000 A/m produces a magnetic flux of 4 x 10-5 Wb in an iron rod of cross-sectional area 0.4 cm2. The permeability of the rod in Wb/A-m, is ______.


SI Unit of Magnetization is ____________.


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)`.


The dimensions of the relative magnetic permeability of the substance are ______.


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 relative magnetic permeability (`mu_"r"`) of a substance is related to its susceptibility (`chi`) as ____________.


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 ____________.


Magnetization of a sample is ______.


A bar magnet has length 3 cm, cross-sectional area 4 cm2, and magnetic moment 6 Am2. The intensity of magnetisation of bar magnet is ______.


The magnetic moment produced in a substance of mass 5 gram is 6 x 10-7 Am2 If its density is 5 g/cm3, then intensity of magnetization in `"A"/"m"` will be ____________.


Magnetic lines of force due to a bar magnet do not intersect because ______.


A magnetic needle of magnetic moment 6.7 × 10–2 Am2 and moment of inertia 7.5 × 10–6 kg m2 is performing simple harmonic oscillations in a magnetic field of 0.01 T. Time taken for 10 complete oscillations is ______.


Demagnetisation of magnets can be done by ______.

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 ______.


Susceptibility is positive and large for a ______.

If μ0 is absolute permeability of vacuum and μr is relative magnetic permeability of another medium, then permeability μ of the medium is ______.

The magnetic susceptibility for diamagnetic materials is ______.

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

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 ______.


State unit and dimensions of Magnetic susceptibility.


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


For a medium of permeability µ, its magnetic susceptibility x is [µ 0 = permeability of vacuum]


An iron rod is subjected to a magnetising field of 1200 Am-1 .The susceptibility of iron is 599. Find the permeability and the magnetic field produced. 


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


A solenoid having 400 turns/metre has a core of a material with relative permeability 300. If a current of 0.5 A is passed through it, then the magnetisation of the core material is nearly ______.


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