Verified Solution • 2025–26 Session moderate

QPages 329-330: Q5: HC Verma: Concepts of Physics - Volume 2 Alternating Current Pages 329-330: Q5 Solution: The AC voltage across a resistance can be measured using

⚠️ Common Exam Traps & Conceptual Pitfalls

A moving‑coil galvanometer measures current, not voltage. For AC voltage across a resistor use a hot‑wire voltmeter that measures the rms voltage. Do not confuse a hot‑wire ammeter (current) with a hot‑wire voltmeter (voltage).

The AC voltage across a resistance can be measured using

Multiple Choice Options

  • A a) a hot-wire ammeter,
  • B b) a moving-coil galvanometer,
  • C c) a hot-wire voltmeter,
  • D d) a moving-magnet galvanometer

Step-by-Step Verified Solution

**Answer:** (b) a hot-wire voltmeter. **Step-by-Step Explanation:** A hot-wire voltmeter measures the rms value of AC voltage.

All Questions in this Chapter

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