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Electronics and Communication Engineering - Materials and Components - Discussion

Discussion Forum : Materials and Components - Section 8 (Q.No. 41)
Materials and Components
41.
The core of a solenoid is made of material of relative permeability μr. A small cavity area dA and length dl is cut in the core. If it is desired that flux density in the cavity should be equal to B0
the fields inside and outside the cavity must be equal
the field inside the cavity must be made stronger than field outside the cavity
the field inside the cavity must be made weaker than the field outside the cavity
none of the above
Answer: Option
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