MCQ
A charged particle moves in a magnetic field $\vec B = 10\,\hat i$ with initial velocity $\vec u = 5\hat i + 4\hat j$ The path of the  particle will be
  • A
    straight line
  • B
    circle
  • helical
  • D
    none

Answer

Correct option: C.
helical
c
$Y-component$ of velocity will make the particle to move in circle whereas $x$ $-component$ of velocity will make particle move along $x$$-axis.$ So motion is helical.

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