A resistor R and 2μF capacitor in series is connected through a switch to 200V 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 5s after the switch has been closed. (log102.5 = 0.4)
(a) 1.3 × 104Ω
(b) 1.7 × 105Ω
(c) 2.7 × 106Ω
(d) 3.3 × 107Ω
