The resultant force on the current loop $PQRS$ due to a long current carrying conductor will be
  • A$10^{-4}\,N$
  • B$3.6 \times {10^{ - 4}}\,N$
  • C$1.8 \times {10^{ - 4}}\,N$
  • D$5 \times {10^{ - 4}}\,N$
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