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MCQMediumJEE Main 2026 · 24 January, Shift 2Biot–Savart Law

Physics Question from JEE Main 2026 · 24 January, Shift 2

Two identical circular loops PP and QQ each of radius rr are lying in parallel planes such that they have common axis. The current through PP and QQ are II and 4I4I respectively in clockwise direction as seen from OO. The net magnetic field at OO is:

Two identical circular loops P and Q of radius r drawn in parallel planes with a common horizontal axis. The point O lies on that axis midway between them, at a distance r from the centre of P on one side and a distance r from the centre of Q on the other side.
  • A

    μ0I42r\dfrac{\mu_0 I}{4\sqrt{2}r} towards QQ

  • B

    μ0I42r\dfrac{\mu_0 I}{4\sqrt{2}r} towards PP

  • C

    3μ0I42r\dfrac{3\mu_0 I}{4\sqrt{2}r} towards PP

  • D

    3μ0I42r\dfrac{3\mu_0 I}{4\sqrt{2}r} towards QQ

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