A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge will experience :
- A. a deflecting force towards north direction.
- B. a deflecting force towards east direction.
- C. a deflecting force towards west direction.
- D. no deflecting force. ✓
Correct Answer: D. no deflecting force.
Explanation
The magnetic force on a moving charge is given by F = qvB\sin\theta. Since the charge is moving south and the field is north, the angle \theta is 180^{\circ}, making \sin(180^{\circ}) = 0. Hence, it experiences no deflecting force.
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