Question
Under what condition the force acting on a charge moving through a uniform magnetic field is minimum?
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Answer
$\text{F}_\text{m}=\text{qvB}\sin\theta$; for minimum force $\sin\theta=0$.
i.e., force is minimum when charged particle moves parallel or antiparallel to the field.
i.e., force is minimum when charged particle moves parallel or antiparallel to the field.
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