Magnetic field due to currentHard
Question
A particle of specific charge 
= π × 1010 C kg-1 is projected from the origin along the positive x - axis with a velocity of 105 ms-1 in a uniform magnetic field = - 2 × 10-3 tesla. Choose correct alternative(s
= π × 1010 C kg-1 is projected from the origin along the positive x - axis with a velocity of 105 ms-1 in a uniform magnetic field = - 2 × 10-3 tesla. Choose correct alternative(sOptions
A.The centre of the circle lies on the y - axis
B.The time period of revolution is 10-7 s.
C.The radius of the circular path is 
D.The velocity of the particle at t = 
× 10-7s is 105ĵ m/s
× 10-7s is 105ĵ m/sSolution
, 
= 105î , 
= - 2 × 10-3
⇒ Force will be in y - direction⇒ Motion of particle will be in xy plane
Time period T =
= 10-7 sradius of path =
× 10-3 m = 
mmAt t =
s. Velocity of particle will be in +y direction.
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