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QPage 352: Q1: HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Page 352: Q1 Solution: Electric conduction takes place in a discharge tube due to the…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often incorrectly assume that only free electrons or only positive ions carry current in a gas discharge tube, forgetting that both positive and negative ions are generated via ionization and contribute to conduction. Remember that in a discharge tube, current is carried by the simultaneous movement of positive ions, negative ions, and electrons.

Electric conduction takes place in a discharge tube due to the movement of ___________ .

Multiple Choice Options

  • A positive ions
  • B negative ions
  • C electrons
  • D protons

Step-by-Step Verified Solution

**Answer:** (a), (b), (c). **Step-by-Step Explanation:** Electric conduction in a discharge tube involves positive ions, negative ions, and electrons.

All Questions in this Chapter

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