A loop ABCD, carrying current I = 12 A, is placed in a plane, con… | JEE Main 2025 Physics PYQ

NVAEasyJEE Main 2025 · 3 April, Shift 1Biot–Savart Law

A loop ABCD, carrying current $I = 12 \, A$ , is placed in a plane, consists of two semi-circular segments of radius $R_1 = 6\pi \, m$ and $R_2 = 4\pi \, m$ . The magnitude of the resultant magnetic field at center O is $k \times 10^{-7} \, T$ . The value of $k$ is _____ (Given $\mu_0 = 4\pi \times 10^{-7} \, T \, m \, A^{-1}$ )

Current-carrying loop with two semicircular arcs centered at O, points A, B, O, C, D on diameter line, current direction shown along arcs, radii R1 and R2 marked from O to the arcs.

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