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[" 23.Two identical induction coils each...

[" 23.Two identical induction coils each of inductance "L" are "],[" jointed in series are placed very close to each other such "],[" that the winding direction of one is exactly opposite to that "],[" of the other,what is the net inductance? "],[[" (a) "L^(2)," (b) "2L],[" (c) "L/2," (d) zero "]]

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