ExamHabit
Practise free

NEET 2025

NEET 2025 Physics question on Magnetism and Moving Charges

An electron (mass 9×10−319 \times 10^{-31} kg and charge 1.6×10−191.6 \times 10^{-19} C) moving with speed c/100c/100 (cc = speed of light) is injected into a magnetic field BB of magnitude 9×10−49 \times 10^{-4} T perpendicular to its direction of motion. We wish to apply an uniform electric field EE together with the magnetic field so that the electron does not deflect from its path. Then (speed of light c=3×108c = 3 \times 10^8 ms−1^{-1})
  1. A.
    EE is parallel to BB and its magnitude is 27×10427 \times 10^4 V m−1^{-1}
  2. B.
    EE is perpendicular to BB and its magnitude is 27×10427 \times 10^4 V m−1^{-1}
  3. C.
    EE is perpendicular to BB and its magnitude is 27×10227 \times 10^2 V m−1^{-1}
  4. D.
    EE is parallel to BB and its magnitude is 27×10227 \times 10^2 V m−1^{-1}
Show answer

Correct option: C

[NEET 2025]

Practise Magnetism and Moving Charges the way it is asked

A timed set of real NEET Magnetism and Moving Charges questions, graded as the exam grades. No sign-up.

Start a Magnetism and Moving Charges test

More: all NEET Magnetism and Moving Charges questions · NEET 2025 · Physics chapter list