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प्रश्न
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required ?
पर्याय
T: Large retentivity, large coercivity.
P: Large retentivity, large coercivity.
T: Large retentivity, small coercivity.
T: Small retentivity, large coercivity.
उत्तर
P: Large retentivity, large coercivity.
Explanation:
Given: A permanent magnet P and a transformer magnet T
To find: The correct property of the two given magnets.
Permanent magnets should preserve their magnetic fields even in the absence of an external magnetic field. They should be retentive and coercive.
Transformer magnets are magnetised and demagnetized numerous times. As a result, they should be retentive and coercive.
