Question

In the presence of magnetic field ?B? and electric field ?E?, the total force on a moving charged particle is

• A. $\vec{F}=\vec{V}[(\vec{q}?\vec{B})+\vec{E}]$
• B. $\vec{F}=q[(\vec{v}?\vec{E})+\vec{B}]$
• C. $\vec{F}=q[(\vec{v}?\vec{B})+\vec{E}]$
• D. $\vec{F}=B[(\vec{q}?\vec{E})+\vec{V}]$

Answer 1

Answer: (C)

$\vec{F}=q[(\vec{v}?\vec{B})+\vec{E}]$

Answer 2

Lorentz force on a charged particle in presence of magnetic and electic field is
$\vec{F}=\vec{F_e}+\vec{F_m}$
$\Rightarrow \vec{F}=q\vec{E}+q(\vec{v}?\vec{B})$