A charged particle is always moving parallel to the direction of magnetic field. The magnetic force acting…

A charged particle is always moving parallel to the direction of magnetic field. The magnetic force acting on the particle will be
  1. opposite to its velocity.
  2. zero.
  3. perpendicular to its velocity.
  4. along its velocity.

Solution

Magnetic force is given by $\mathrm{F}=\mathrm{qvB} \sin \theta$ If $\theta=0^{\circ}$, then $\mathrm{F}=0$ .

Asked in: MHT CET 2020 (19 Oct Shift 1)

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