Q. The magnetic force on a moving charge is maximum when angle between velocity and field is

किसी गतिमान आवेश पर चुंबकीय बल अधिकतम तब होता है जब वेग और क्षेत्र के बीच कोण होता है

0°

90°

45°

180°

Magnetic force $F = qvB \sin \theta$ , where $\theta$ is the angle between velocity $\vec{v}$ and magnetic field $\vec{B}$ .

Maximum force occurs when $\sin \theta = 1$ , i.e., $\theta = 90^\circ$ (velocity perpendicular to magnetic field).
Force is zero when velocity is parallel or antiparallel ( $0^\circ$ or $180^\circ$ ).

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