Ap Eapcet
Moving Charges And Magnetism
AP EAPCET 2025 - 21st May Morning Shift
MCQ+1 / -02025
A velocity selector is to be constructed to select ions with a velocity of $6 \mathrm{~km} \mathrm{~s}^{-1}$. If the electric field used is $400 \mathrm{~V} \mathrm{~m}^{-1}$, then the magnetic field to be used is