A coil of one turn is made of a wire of certain length and then from the same length a coil of two turns is made. If the same current is passed in both the cases, then the ratio of the magnetic inductions at their centres will be
  • A$4 : 1$
  • B$1 : 4$
  • C$2 : 1$
  • D$2 : 1$
AIPMT 1998, Medium
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