Verified Solution • 2025–26 Session moderate

QPages 140-141: Q3: HC Verma: Concepts of Physics - Volume 2 Gauss's Law Pages 140-141: Q3 Solution: A large non-conducting sheet M is given a uniform charge…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often assume that two neutral metal rods cannot attract each other or that induced charges will always produce repulsion; in reality each rod develops opposite charges on the faces facing the charged sheet, creating dipoles that attract one another as well as the sheet. Remember that polarization of conductors leads to a net attractive force between any two nearby neutral conductors in an external electric field.

A large non-conducting sheet M is given a uniform charge density. Two uncharged small metal rods A and B are placed near the sheet as shown in the following figure.

Multiple Choice Options

  • A M attracts A.
  • B M attracts B.
  • C A attracts B.
  • D B attracts A.

Step-by-Step Verified Solution

**Answer:** a), b), c), d). **Step-by-Step Explanation:** M attracts A and B (induced polarisation). A and B attract each other (both get polarised).

All Questions in this Chapter

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