A resistance of 20 Ω is connected to a source of an alternating potential V = 220 sin…
Physics · JEE Advanced · NTA Exams — Electromagnetic Induction and Alternating Currents
A resistance of 20 Ω is connected to a source of an alternating potential V = 220 sin (100 πt). The time taken by the current to change from the peak value to rms value, is
- 0.2 s
- 0.25 s
- 2.5 × 10–3 s
- 2.5 × 10–3 s
Answer
(C) 2.5 × 10 –3 s
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