The r.m.s. potential difference between the red live wire and black neutral wire in Indian domestic electric supply is
- A. 160 V
- B. 220 V ✓
- C. 300 V
- D. 410 V
Correct Answer: B. 220 V
Explanation
The standard RMS voltage for domestic single-phase AC power supply in India is 220 V (operating at a frequency of 50 Hz).
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