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

Options

A. 0
B. qa(b+c)
C. `qa(b^(2)-c^(2))^(1//2)`
D. `qa(b^(2) + c^(2))^(1//2)`

Answer

D