The figure illustrate how B, the flux density inside a sample of unmagnetized ferromagnetic material varies with B 0 , the magnetic flux density in which the sample is kept. For the sample to be suitable for making a permanent magnet
Text Solution
Verified by ExpertsThe correct answer is:
B
In the given figure OQ refers to retentivity while OR refers to coercivity, for permanents both retentivity and coercivity should be high.
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