Verified Solution • 2025–26 Session moderate

QPages 140-141: Q1: HC Verma: Concepts of Physics - Volume 2 Gauss's Law Pages 140-141: Q1 Solution: Mark the correct options:

⚠️ Common Exam Traps & Conceptual Pitfalls

Students frequently assume that charges outside a closed surface contribute to the net electric flux, leading them to reject Gauss's law for non‑symmetric situations. Remember that any field lines entering the surface from external charges must also leave it, so the total flux depends solely on the charge enclosed, regardless of symmetry or surrounding medium.

Mark the correct options:

Multiple Choice Options

  • A Gauss's Law is valid only for symmetrical charge distributions.
  • B Gauss's Law is valid only for charges placed in vacuum.
  • C The electric field calculated by Gauss's Law is the field due to the charge inside the Gaussian surface.
  • D The flux of the electric field through a closed surface due to all the charges is equal to the flux due to the charges enclosed by the surface.

Step-by-Step Verified Solution

**Answer:** (d) The flux of the electric field through a closed surface due to all the charges is equal to the flux due to the charges enclosed by the surface. **Step-by-Step Explanation:** Gauss's law states that the flux through a closed surface depends only on the enclosed charge.

All Questions in this Chapter

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