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A particle of charge q and mass m starts...

A particle of charge q and mass m starts moving from the origin under the action of an electric field `vec E = E_0 hat i and vec B = B_0 hat i` with a velocity `vec v = v_0 hat j`. The speed of the particle will become `2v_0` after a time.

A

`t = (2m v_(0))/(qE_(0))`

B

`t = (2 B_(0)q)/(mv_(0))`

C

`t = (sqrt(3) B_(0)q)/(mv_(0))`

D

`t = (sqrt(3) m v_(0))/(qE_(0))`

Text Solution

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The correct Answer is:
D
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