A uniform and constant magnetic field $$B = \hat zB$$ exists in the $$\overrightarrow z $$ direction in vacuum. A particle of mass m with a small charge q is introduced into this region with an initial velocity $$v = \hat x{v_x} + \hat z{v_z}.$$ 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 $${\hat z}$$ direction
B. Circular motion in the xy plane
C. Linear motion in the $${\hat z}$$ direction
D. Linear motion in the $${\hat x}$$ direction
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Electromagnetic Field Theory
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