Verified Solution • 2025–26 Session moderate

QPage 119: Q14: HC Verma: Concepts of Physics - Volume 2 Electric Field Potential Page 119: Q14 Solution: When a charged comb is brought near a small piece of paper, it…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often think that attraction to a charged object means the neutral object has gained a net charge. In reality, the paper is polarized: charges separate but the net charge remains zero ($q_{ ext{net}}=0$). Only contact or friction can give a net charge.

When a charged comb is brought near a small piece of paper, it attracts the piece. Does the paper become charged when the comb is brought near it?

Step-by-Step Verified Solution

**Answer:** No, the paper does not become charged when the comb is brought near it. **Step-by-Step Explanation:** The paper becomes polarised, not charged. The charged comb induces opposite charges on the near and far sides of the paper (charge separation). The net charge on the paper remains zero. The attraction occurs because the induced opposite charge on the near side is closer to the comb, resulting in a net attractive force .

All Questions in this Chapter

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