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Posted by: amit_physics on March 20, 2011. Paramagnetic materials have following properties: In paramagnetic materials, the magnetic lines of forces due to the applied field are attracted towards the paramagnetic material. When suspended in a uniform magnetic field, paramagnetic materials rotate so as to bring their longest axis along the direction of the magnetic field
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Posted by: amit_physics on March 18, 2011. Relative magnetic permeability of diamagnetic materials is always less than unity that is μr < 1 Explanation: When a specimen of diamagnetic material is placed in a magnetising field, the lines of magnetic force prefer not to pass through the specimen. This is as if a diamagnetic material
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Posted by: amit_physics on March 18, 2011. Diamagnetic materials have following properties: In a diamagnetic material, the magnetic lines of forces due to an applied field are repelled. when suspended in a uniform magnetic field, diamagnetic materials set their longest axis at right angles to the direction of the field and the shortest axis is
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Posted by: amit_physics on March 17, 2011. In an atom, electron revolves around the nucleus in a closed orbit. Since electron is a charged particle, so its orbit around the nucleus is equivalent to a current loop. When electron revolves in anticlockwise direction, the current is clockwise. Thus, upper face of the electron loop acts
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Posted by: amit_physics on March 12, 2011. Relative magnetic permeability is defined as the ratio of permeability of medium to the permeability of free space. μr = μ/ μ0 Reference: This article is referred from my book “electrical engineering materials” having ISBN: 978-81-272-5069-0. (function() { var po = document.createElement(‘script’); po.type = ‘text/javascript’; po.async = true;
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Posted by: amit_physics on March 12, 2011. Magnetic permeability is defined as the degree to which the magnetic lines of force can penetrate or permeate the material. It can also be defined as the ability of the material to permit the passage of magnetic lines of force through it. Reference: This article is referred from
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Posted by: amit_physics on March 12, 2011. Intensity of magnetization represents the extent to which a specimen is magnetized when placed in a magnetizing field. It is also defined as the magnetic moment per unit volume of the material. It is also defined as the pole strength per unit area of cross-section of the material.
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Posted by: amit_physics on March 12, 2011. Magnetic intensity is same as magnetizing force. Therefore, it is also defined as the degree to which a magnetic field can magnetise a material is expressed in terms of magnetizing force. Consider a toroidal solenoid with n turns per unit length carrying a current I. The magnetic induction
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Posted by: amit_physics on March 12, 2011. The degree to which a magnetic field can magnetise a material is expressed in terms of magnetizing force. Consider a toroidal solenoid with n turns per unit length carrying a current I. The magnetic induction of the field produced will be B = μnI The product nI is
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Posted by: amit_physics on March 11, 2011. Magnetic flux density is also known as magnetic induction. When a magnetic material is placed in an external magnetic field then material gets magnetized. Such magnetism produced in the material is called induced magnetism and the phenomenon is called is called magnetic induction It is also defined as