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A proton is projected with velocity into a region where magnetic field of induction exists. Now a uniform electric field is switched on such that the velocity of proton remains unchanged. The electric field must be
detailed solution
Correct option is D
Lorentz force on the proton must be zero.∴ eE→+ev→×B→=0E→=-vi^×Bk^=vBj^Talk to our academic expert!
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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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