EC > GATE 2016 SET-2 > Magnetic Fields
A uniform and constant magnetic field B=ẑB exists in the ẑ direction in vacuum. A particle of mass m with a small charge q is introduced into this region with an initial velocity v=x̂vx+ẑvz. Given that B, m, q, vx and vz are all non-zero, which one of the following describes the eventual trajectory of the particle?
A
Helical motion in the ẑ direction.
B
Circular motion in the xy plane.
C
Linear motion in the ẑ direction.
D
Linear motion in the x̂ direction.

Correct : a

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