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प्रश्न
If the magnetizing field on a ferromagnetic material is increased, its permeability ______.
पर्याय
decreases
increases
remains unchanged
first decreases and then increases
उत्तर
If the magnetizing field on a ferromagnetic material is increased, its permeability decreases.
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संबंधित प्रश्न
The susceptibility of magnesium at 200 K is 1.8 x 10-5. At what temperature will the susceptibility decrease by 6 x 10-6?
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For a paramagnetic substance, the magnetic susceptibility is ______.
Why does a paramagnetic sample display greater magnetisation (for the same magnetising field) when cooled?
The coercivity of a small magnet where the ferromagnet gets demagnetized is 3 × 103 Am–1. The current required to be passed in a solenoid of length 10 cm and number of turns 100, so that the magnet gets demagnetized when inside the solenoid, is ______.
For a diamagnetic material
Essential difference between electrostatic shielding by a conducting shell and magnetostatic shielding is due to ______.
- electrostatic field lines can end on charges and conductors have free charges.
- lines of B can also end but conductors cannot end them.
- lines of B cannot end on any material and perfect shielding is not possible.
- shells of high permeability materials can be used to divert lines of B from the interior region.
Which of the following cannot modify an external magnetic field as shown in the figure?
State the dimensions of magnetization.
