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Magnetics question

2025 · 24 Jan · Shift 2 · Q51
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Magnetics question

2025 · 24 Jan · Shift 2 · Q51

JEE MainPhysicsMagneticsMCQ+4 / −1
JEE Main 2025 (Online) 24th January Evening Shift Physics - Magnetic Effect of Current Question 12 English N equally spaced charges each of value q , are placed on a circle of radius R . The circle rotates about its axis with an angular velocity ω\omegaω as shown in the figure. A bigger Amperian loop B encloses the whole circle where as a smaller Amperian loop A encloses a small segment. The difference between enclosed currents, IA−IBI_A-I_BIA​−IB​, for the given Amperian loops is
  1. A
    N22πqω\frac{\mathrm{N}^2}{2 \pi} \mathrm{q} \omega2πN2​qω
  2. B
    N2πqω\frac{\mathrm{N}}{2 \pi} \mathrm{q} \omega2πN​qω
  3. C
    2πNqω\mathrm{\frac{2 \pi}{N} q \omega}N2π​qω
  4. D
    Nπqω\frac{\mathrm{N}}{\pi} \mathrm{q} \omegaπN​qω
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