A coil is wound having a diameter d. Its inductance is 10 mH. If it is – McqOptions

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1.	A coil is wound having a diameter d. Its inductance is 10 mH. If it is rewound on the same core with a wire having diameter 0.5 d and total weight of the wire is the same as before, the inductance will be
A.	5 mH
B.	10 mH
C.	160 mH
D.	40 mH
Answer» D. 40 mH

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