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The unit of magnetic permeability is
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Important Questions on Matter and Magnetism
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The unit of magnetic flux density is
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The magnetic susceptibility of a material of a rod is Permeability in vacuum is Absolute permeability of the material of the rod is
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A solenoid has a core of material with relative permeability The windings of the solenoid are insulated from the core and carry a current of If the number of turns are per metre. The magnetization in is
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A long solenoid has the radius and turns. It carries a current of . If it is equivalent to a magnet of the same size and magnetization then is:
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Magnetization of the sample is
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For a paramagnetic material, the dependence of the magnetic susceptibility on the absolute temperature is given by
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The property of the substance which shows how easily a substance can be magnetized, when placed in a magnetic field is called
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Given below are two statements :
Statement - I : Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature.
Statement - II : Diamagnetism is a result of orbital motions of electrons developing magnetic moments opposite to the applied magnetic field.
Choose the correct answer from the options given below
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Susceptibility of a diamagnetic substance is
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A solenoid has core of a material with relative permeability and its windings carry a current of The number of turns of the solenoid is . The magnetisation of the material is
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Which of the following properties has low value for ferrites?
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Magnetic susceptibility of a paramagnetic substance is
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The diamagnetic material has susceptibility
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Magnetic susceptibility of platinum is . Its relative permeability is.
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The susceptibility of a paramagnetic material is . The permeability of the material in , is [Permeability of free space ]
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A domain in ferromagnetic iron in the form of cube is having atoms. If the side length of this domain is and each atom has a dipole moment of , then magnetisation of domain is
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Magnetic susceptibility for a paramagnetic and diamagnetic material is respectively
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is permeability of vacuum, is susceptibility then permeability of material is
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A paramagnetic sample shows a net magnetisation of when it is placed in an external magnetic field of at a temperature of . When the sample is placed in an external magnetic field of at a temperature of , then the magnetisation will be :
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The magnetization of bar magnet of length , cross-sectional area and net magnetic moment is
