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A particle of charge q moves with a velo...

A particle of charge q moves with a velocity `vecv = ahati` in a magnetic field of `vecB = b hatj + c hatk` where a ,b and c are constants. The magnetic of the force experienced by the particle is

A

0

B

qa(b+c)

C

`qa(b^(2)-c^(2))^(1//2)`

D

`qa(b^(2) + c^(2))^(1//2)`

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The correct Answer is:
D
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