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प्रश्न
State unit and dimensions of Magnetic susceptibility.
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उत्तर
It is a measure of the magnetic behaviour of the material in the external applied magnetic field. χ is the ratio of two quantities with the same units (Am-1). Hence it is a dimensionless constant.
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संबंधित प्रश्न
What is Magnetization?
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.
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 ______________ .
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
Mark out the correct options.
(a) Diamagnetism occurs in all materials.
(b) Diamagnetism results from the partial alignment of permanent magnetic moment.
(c) The magnetising field intensity, H, is always zero in free space.
(d) The magnetic field of induced magnetic moment is opposite the applied field.
The magnetic field inside a long solenoid of 50 turns cm−1 is increased from 2.5 × 10−3 T to 2.5 T when an iron core of cross-sectional area 4 cm2 is inserted into it. Find (a) the current in the solenoid (b) the magnetisation I of the core and (c) the pole strength developed in the core.
Assume that each iron atom has a permanent magnetic moment equal to 2 Bohr magnetons (1 Bohr magneton equals 9.27 × 10−24 A m2). The density of atoms in iron is 8.52 × 1028 atoms m−3. (a) Find the maximum magnetisation I in a long cylinder of iron (b) Find the maximum magnetic field B on the axis inside the cylinder.
At a certain temperature, a ferromagnetic material becomes paramagnetic. What is this temperature called?
A magnetic material of susceptibility 3 × 10−4, and magnetic intensity is 4 × 10−4 Am−1. Then The magnetization in the units of Am−1 is ______.
What does the ratio of magnetization to magnetic intensity indicate?
Explain the magnetization of a material.
A magnet of magnetic moment 3Am2 weighs 75 g. The density of the material of the magnet is 7500 kg/m3. what is magnetization?
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 ____________.
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 ____________.
An iron rod is placed parallel to magnetic field of intensity 4000 A/m. The magnetic flux through the rod is 8 x 10-4 Wb and its cross-sectional area is 4 cm2 . The magnetic permeability of the rod in Wb/A - m is ____________.
The magnetic field (B) inside a long solenoid having 'n', turns per unit length and carrying current 'I' when iron core is kept in it is (`mu_0` = permeability of vacuum, `chi` = magnetic susceptibility) ____________.
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 ____________.
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)`.
Assertion: Susceptibility is defined as the ratio of intensity of magnetisation I to magnetic intensity H.
Reason: Greater the value of susceptibility, smaller the value of intensity of magnetisation I.
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 ____________.
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 ______.
(µ0 = permeability of free space.)
Magnetic intensity is given by ______.
Magnetic lines of force due to a bar magnet do not intersect because ______.
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 ______.
Magnetic permeability is maximum for ______
What is magnetic susceptibility?
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:______.
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.
State SI unit of Magnetization.
The magnetic susceptibility of iron is 5499. The relative permeability of iron will be ______.
