A. 90°
B. 45°
C. 30°
D. 0°
Correct Answer:
Option C – 30°
Explanation
The force on a moving charge in a magnetic field is given by F = q V β sin θ
and this force is maximum when θ = 90o, during which sin 90° = 1: and for sinθ = 0.5, θ = 30°
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