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Magnetics question

2023 · 30 Jan · Shift 2 · Q58
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Magnetics question

2023 · 30 Jan · Shift 2 · Q58

JEE MainPhysicsMagneticsMCQ+4 / −1
As shown in the figure, a current of 2 A2 \mathrm{~A}2 A flowing in an equilateral triangle of side 43 cm4 \sqrt{3} \mathrm{~cm}43​ cm. The magnetic field at the centroid O\mathrm{O}O of the triangle is JEE Main 2023 (Online) 30th January Evening Shift Physics - Magnetic Effect of Current Question 78 English (Neglect the effect of earth's magnetic field)
  1. A
    43×10−4 T4 \sqrt{3} \times 10^{-4} \mathrm{~T}43​×10−4 T
  2. B
    43×10−5 T4 \sqrt{3} \times 10^{-5} \mathrm{~T}43​×10−5 T
  3. C
    33×10−5 T3 \sqrt{3} \times 10^{-5} \mathrm{~T}33​×10−5 T
  4. D
    3×10−4 T\sqrt{3} \times 10^{-4} \mathrm{~T}3​×10−4 T
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