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[" A coil of one turn of radius r and se...

[" A coil of one turn of radius r and self "],[" inductance L is bent in two concentric "],[" turns each having radius "(r)/(2)" .The self- "],[" inductance now is "],[" (A) "2L],[" (B) "L],[" (C) "4L],[" (D) "L/2]

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