Verified Solution • 2025–26 Session moderate

QPage 229: Q3: HC Verma: Concepts of Physics - Volume 2 Magnetic Field Page 229: Q3 Solution: Which of the following particles will experience maximum…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often incorrectly apply the cyclotron radius formula ($r = mv/qB$) or assume mass affects the force, but the magnetic force magnitude is strictly $F = qvB \sin\theta$. Since velocity and field are constant, the force depends only on the magnitude of the charge $|q|$, making the particle with the highest charge (Li$^{2+}$) the correct answer regardless of its mass.

Which of the following particles will experience maximum magnetic force magnitude) when projected with the same velocity perpendicular to a magnetic field?

Multiple Choice Options

  • A Electron
  • B Proton
  • C He+
  • D Li++

Step-by-Step Verified Solution

**Answer:** (d) Li__. **Step-by-Step Explanation:** F = qvB. Li__ has the largest charge (2e), so it experiences the maximum force.

All Questions in this Chapter

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