লরেঞ্জ বল (Lorentz force) এর গাণিতিক রূপ কোনটি?

$\mathrm{q} \overrightarrow{\mathrm{E}}$

$\rm{q(\overrightarrow{v} \times \overrightarrow{B})}$

$\rm{q(\overrightarrow{E}+\overrightarrow{v} \times \overrightarrow{B})}$

$\rm{q(\overrightarrow{E} \times \overrightarrow{v} \times \overrightarrow{B})}$