Question

A beam of electron passes un deflected through mutually perpendicular electric field and magnetic field. If the electric field is switched off, and the same magnetic field is maintained, the electrons move

• A. in a circular orbit
• B. along a parabolic path
• C. along a straight line
• D. in an elliptical orbit

Answer 1

The correct option is A in a circular orbit

A beam of electron passes un deflected through mutually perpendicular electric field and magnetic field. If the electric field is switched off, and the same magnetic field is maintained, the electrons move in a circular orbit beacuse velocity, magnetic field and electric field are mutually perpendicular.