Coercivity The amount of reverse (-ve H) external magnetizing field required to completely demagnetize the substance is known as the coercivity of the substance. The value of H at point c in the hysteresis …

Coercivity is the strength of the reverse magnetising field that must be applied to completely demagnetise the material. Curie Temperature Ferromagnetic property depends on temperature. At a …

The coercivity of a small magnet where the ferromagnet gets demagnetized is 3×103Am−1. The current required to be passed through the solenoid of length 10 cm and number of turns 100, so that the …

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The coercivity of the bar magnet is: Q. A bar magnet is demagnetized by inserting it inside a length 0.2 m, 100 turns, and carrying a currents of 5.2 A. The coercivity of the bar magnet is : Q. A bar magnet …

I ∝ H I = χ m H , χ m is the susceptibility of the material. Property 4: Retentivity The ability of a material to retain or resist magnetization is called retentivity. Property 5: Coercivity The coercivity of a …

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It is the ability of the electromagnet to retain its magnetic property after removing the electric field. The retentivity also has to be low to bring the electromagnet to its original state after removing the electric …

Following this, there was intense experimentation. In 1864, the laws obeyed by electricity and magnetism were unified and formulated by James Maxwell who then realised that light was …

The correct measure of magnetic hardness of a material is X X X B. c. D. permanent magnetism Hysteresis loss Coercivity retentivity Coercivity is the resistance of a magnetic material to changes in …