An air-cored solenoid has 100 turns and is 1 m long. If the area of t – McqOptions

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1.	An air-cored solenoid has 100 turns and is 1 m long. If the area of the cross section is 100 cm2, what will be its self-inductance (in μH)?
A.	400 π
B.	4 π
C.	40 π
D.	0.4 π
Answer» D. 0.4 π

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