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QPage 418: Q6: HC Verma: Concepts of Physics - Volume 2 Semiconductors and Semiconductor Devices Page 418: Q6 Solution: A semiconducting device is connected in a series circuit with a …

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often assume a p‑type or n‑type material alone will block reverse current. In fact, a single doped semiconductor conducts in both directions; only a p‑n junction forms a depletion region that permits current only in forward bias.

A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. the device may be

Multiple Choice Options

  • A an intrinsic semiconductor
  • B a p-type semiconductor
  • C an n-type semiconductor
  • D a p-n junction

Step-by-Step Verified Solution

**Answer:** (d) a p-n junction. **Step-by-Step Explanation:** A p-n junction conducts in forward bias but not in reverse bias.

All Questions in this Chapter

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