A charge $q$ moves in a region where electric field and magnetic field both exist, then force on it is
AIPMT 2002, Easy
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(a)Lorentz force is given by
$\overrightarrow F = \overrightarrow {{F_e}} + \overrightarrow {{F_m}} = q\overrightarrow E + q(\overrightarrow v \times \overrightarrow B ) = q[\overrightarrow E + (\overrightarrow v \times \overrightarrow B )]$
$\overrightarrow F = \overrightarrow {{F_e}} + \overrightarrow {{F_m}} = q\overrightarrow E + q(\overrightarrow v \times \overrightarrow B ) = q[\overrightarrow E + (\overrightarrow v \times \overrightarrow B )]$
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