NEET 2025 Q 3 #physics#neet2025 #neetquestion #neetaspirents #neetpreparation #neetexam

An electron (mass 9 × 10–31 kg and charge 1.6 ×10–19 C)
moving with speed c/100 (c = speed of light) is
injected into a magnetic field B of magnitude 9 × 10–4 T
perpendicular to its direction of motion. We wish to
apply an uniform electric E together with the
magnetic field so that the electron does not deflect
from its path. Then (speed of light c = 3 × 108 ms–1)

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