The figure illustrate how B, the flux density inside a sample of unmagnetised ferromagnetic material varies with `B_(0)`, the magnetic flux density in which the sample is kept. For the samle to be suitable for making a permanent magnet
A
OQ should be large, OR should be small
B
OQ and OR should both be large
C
OQ should be small and OR should be large
D
OQ and OR should both be small
Text Solution
Verified by Experts
The correct Answer is:
B
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