Charged Particle Path
A charge enters uniform B perpendicular to field. Path is?
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About This Question
- Subject
- physics
- Chapter
- magnetic effects and magnetism
- Topic
- charged particle path
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Circular
- Force Logic: The magnetic force F=q(v×B) is always perpendicular to the velocity.
- Energy Logic: Since the force is perpendicular to displacement, work done is zero (W=0). Kinetic energy and speed remain constant.
- Centripetal Motion: A constant force acting perpendicular to the path of a constant speed object produces uniform circular motion.
- Radius: r=qBmv.
- Conclusion: The trajectory in the plane perpendicular to the field is a circle.
This easy difficulty physics question is from the chapter magnetic effects and magnetism, covering the topic of charged particle path. It appeared in the 2025 exam.
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