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QPage 329: Q3: HC Verma: Concepts of Physics - Volume 2 Alternating Current Page 329: Q3 Solution: The peak voltage of a 220 V AC source is

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often mistake the quoted 220 V AC as the peak value and answer 220 V or 440 V; however, the mains rating is an RMS voltage, so the correct peak is $V_{peak}=\sqrt{2}\,V_{rms}\approx1.414\times220\approx311\text{ V}$.

The peak voltage of a 220 V AC source is

Multiple Choice Options

  • A 220 V
  • B about 160 V
  • C about 310 V
  • D 440 V

Step-by-Step Verified Solution

**Answer:** (c) about 310 V. **Step-by-Step Explanation:** Peak voltage = �2 _ V_rms = �2 _ 220 � 311 V.

All Questions in this Chapter

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