Verified Solution • 2025–26 Session moderate

QPages 119-120: Q1: HC Verma: Concepts of Physics - Volume 2 Electric Field Potential Pages 119-120: Q1 Solution: Figure shows some of the electric field lines corresponding to…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students frequently compare the total number of lines drawn near a region or rely on distance alone, assuming $E$ is larger where more lines appear overall. The correct rule is that the magnitude of $mathbf{E}$ at a point is proportional to the *local* density (spacing) of field lines in its immediate neighbourhood, so $E_A$ and $E_C$ are equal because their spacing is the same, while the tighter spacing near $B$ makes $E_B$ larger.

Figure shows some of the electric field lines corresponding to an electric field. The figure suggests that

Multiple Choice Options

  • A EA>EB>ECE_A > E_B > E_C
  • B EA=EB=ECE_A = E_B = E_C
  • C EA=EC>EBE_A = E_C > E_B
  • D EA=EC<EBE_A = E_C < E_B

Step-by-Step Verified Solution

**Answer:** (d) E_A = E_C < E_B. **Step-by-Step Explanation:** The density of field lines indicates field strength. From the figure, E_A = E_C (same spacing) and E_B is larger.

All Questions in this Chapter

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