Magnetic Effects Of Current Question 390
Question: A thin ring of 10 cm radius carries a uniformly distributed charge. The ring rotates at a constant angular speed of $ 40\pi red{{s}^{-1}} $ about its axis, perpendicular to its plane. If the magnetic field at its centre is $ 3.8\times {{10}^{-9}}T, $ then the charge (in coulomb) carried by the ring is close to $ ({\mu_{0}}=4\pi \times {{10}^{-7}},N/A^{2}) $ .
Solution:
Answer: $ ( 3\times 10{{}^{-5}} ) $
BETA
