Question

An electron is shot in a steady electric and magnetic field such that its velocity is . Electric field and magnetic field are mutually perpendicular. The magnitude of is and that of is . Now it happens that the Lorentz (Magnetic) force cancels with the electrostatic force on the electron , then the velocity of the electron is:

A

B

C

D

Medium
Updated on : 2022-09-05
Solution
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Correct option is A)

magnetic force cancels with the electrostatic force,
so
or,

Solve any question of Moving Charges and Magnetism with:-
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