Mathematics · Aptitude - Alternating Current
An alternating potential V = 200 sin(100πt) is applied across a resistance of 20 Ω. The minimum time 't' taken by the current to change from its peak value to its rms value is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.5 × 10-2 s
- 225 × 10-2 s
- 32.5 × 10-3 s✓
- 425 × 10-1 s
Correct answer
2.5 × 10-3 s
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