A resistor R and 2µF capacitor in series are connected through a switch to 200 V direct…
Physics · JEE Main · NTA Exams — Current Electricity
A resistor R and 2µF capacitor in series are connected through a switch to 200 V direct supply. Across the capacitor is a neon bulb that lights up at 120V. Calculate the value of R to make the bulb light up 5 s after the switch has been closed (log10 2.5 =0.4)
- 1.7×105 Ω
- 2.7×106Ω
- 3.3×107Ω
- 1.3×104Ω
Answer
(B) 2.7×10 6 Ω
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