Physics · Alternating Current
An alternating emf is given by V = 400 sin (100 πt) volt. The rms value of the emf is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1400 V
- 2200√2 V✓
- 3200 V
- 4100√2 V
Correct answer
200√2 V
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