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Question

# A charged particle of specific charge α moves with a velocity →v=v0^i in a magnetic field →B=B0√2(^j+^k). Then : (specific charge = charge per unit mass)path of the particle is a helixdistance moved by particle intime t=πB0α is πv0B0αpath of the particle is a circlevelocity of particle after time t=πB0αis(v02^i+v02^j)

A
path of the particle is a helix
B
distance moved by particle intime t=πB0α is πv0B0α
C
path of the particle is a circle
D
velocity of particle after time t=πB0αis(v02^i+v02^j)
Solution
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#### 1) Path of particle in magnetic field is either circular, straight line or helix, Here charged particle is projected at an angle so path must be circular.2)¯¯¯v=v0¯i

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