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PhysicsJEE Main 23 Jan 2026, Shift 2·Q4·MCQ·Easy–moderate

Moving Charges and Magnetism · Sources of magnetic field

The current passing through a conducting loop in the form of equilateral triangle of side 434\sqrt3 cm is 2 A. The magnetic field at its centroid is α×10−5\alpha\times10^{-5} T. The value of α\alpha is .
(Given: μo=4π×10−7\mu_o = 4\pi\times10^{-7} SI units)
  1. (1)232\sqrt3
  2. (2)3\sqrt3
  3. (3)333\sqrt3
  4. (4)32\dfrac{\sqrt3}{2}

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