Verified Solution • 2025–26 Session moderate

QJEEM25Ph8d6b: JEE Main 2025 Physics - Class 12 JEEM25Ph8d6b Solution: N equally spaced charges each of value q , are placed on a…

JEE Main 2025 (Online) 24th January Evening Shift Physics - Magnetic Effect of Current Question 2 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\omega 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_B , for the given Amperian loops is

Multiple Choice Options

  • A N22πqω\frac{\mathrm{N}^2}{2 \pi} \mathrm{q} \omega
  • B N2πqω\frac{\mathrm{N}}{2 \pi} \mathrm{q} \omega
  • C 2πNqω\mathrm{\frac{2 \pi}{N} q \omega}
  • D Nπqω\frac{\mathrm{N}}{\pi} \mathrm{q} \omega

Step-by-Step Verified Solution

JEE Main 2025 (Online) 24th January Evening Shift Physics - Magnetic Effect of Current Question 2 English Explanation

IA=Nq2πωIA=Nqω2π,IB=0IA−IB=Nqω2π

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