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STD 12 - 4. Moving charges and magnetism — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 4. Moving charges and magnetism4 Marks
MCQ
A beam of electrons passes undeflected through mutually perpendicular electric and magnetic fields. It the electric field is switched off, and the same magnetic field is maintained, the electrons move
  • A
    in an elliptical orbit
  • ✓
    in a circular orbit
  • C
    along a parabolic path
  • D
    along a straight line
✓

Answer

Correct option: B.
in a circular orbit
b
Electron travelling in a magnetic field perpendicular to its velocity - circular path.

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