Ans
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particle is not moving along direction force vector...particle is moving along the direction of velocity vector... furthermore of a particle travels a distance dx in the magnetic field according to module 3 then F is perpendicular to dx so f.dx will be 0. hence we can conclude that force due to magnetic field on charge q only changes the direction of the charge and does not do any work on the charge, and velocity remains constant in a uniform magnetic field
7 years ago
by
ABHISHEK SHANKAR