Three long, straight and parallel wires carrying currents are arranged as shown in the figure. The wire $C$ which carries a current of $5.0\, amp$ is so placed that it experiences no force. The distance of wire $C$ from wire $D$ is then
  • A$9\, cm$
  • B$7\, cm$
  • C$5\, cm$
  • D$3\, cm$
Medium
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