A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields E ˉ and B ˉ with a velocity v ˉ perpendicular to both E ˉ and B ˉ , and comes out without any change in its magnitude or direction. Then

 

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A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields $\bar{E}$ and $\bar{B}$ with a velocity $\bar{v}$ perpendicular to both $\bar{E}$ and $\bar{B}$, and comes out without any change in its magnitude or direction. Then

A

$\vec{v}=\frac{\vec{B}\times \vec{E}}{E^2}$

B

$\vec{v}=\frac{\vec{E}\times \vec{B}}{B^2}$

C

$\vec{v}=\frac{\vec{B}\times \vec{E}}{B^2}$

D

v=E2E×B​