The core of a coil has a length of 200 mm. The inductance of coil is 6 – McqOptions

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1.	The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be?
A.	3 mH
B.	12 mH
C.	24 mH
D.	48 mH
Answer» B. 12 mH

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