- Consider a moving charged particle in a region of magnetic field....

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- Consider a moving charged particle in a region of magnetic field. Which of the following are correct?
I. If vis parallel to \( \mathbf{B} \), then path of particle is spiral.
II. If \( \mathbf{v} \) is perpendicular to \( \mathbf{B} \), then path of particle is a circle.
III. If \( \mathbf{v} \) has a component along \( \mathbf{B} \), then path of particle is helical.
IV. If vis along \( \mathbf{B} \), then path of particle is a circle.
(a) I and II
(b) II and III
(c) III and IV
(d) IV and I
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