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A particle with charge q moves with a ve...

A particle with charge q moves with a velocity V in a direction perpendicular to the directions of uniform electric and magnetic fields, E and B respectively, which are mutually perpendicular to each other. Which one of the following gives the condition for which the particle moves undeflected in its original trajectory ?

A

`v=E/B`

B

`v=B/E`

C

`v=sqrt(E/B)`

D

`v=qB/E`

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