Questions
A beam of electrons passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move
detailed solution
Correct option is B
If beam of electrons passes undeflected, then force due to electric field should be balanced with force due to magnetic fields Fe = Fm. But if electric field becomes zero, then only force due to magnetic field exists. Under this force, the charge moves along a circle.Talk to our academic expert!
Similar Questions
A charged particle of mass m, carrying a charge Q is projected from the origin with a velocity . A uniform magnetic field exists in that region. Then maximum distance of the particle from x-axis is
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