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A particle moves in a region having a un...

A particle moves in a region having a uniform magnetic field and a parallel, uniform electic field. At some instnat, the velocity of the particle is perpendicular to the field direction. The path of the particle will be

A

a straight line

B

a circle

C

a helix with uniform pitch

D

a helix with nounifom pitch

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The correct Answer is:
D
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  11. When a positively charged particle enters into a uniform magnetic fiel...

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  12. A charged particle goes undeflected in a region containing electric an...

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  17. A circular coil carrying current behaves as a

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