A straight wire is placed in a uniform magnetic field

MATHEMATICS · Single correct · ISC · Physics · Magnetic Effects of Current and Magnetism · Force on moving charges

Problem

A straight wire is placed in a uniform magnetic field. At which angle θ\theta between the wire and the field will the force on the wire be zero? (a) 90∘90^\circ (b) 60∘60^\circ (c) 0∘0^\circ (d) 45∘45^\circ

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