Physics - Capacitor Question with Solution | TestHub

A resistor 'R' and $2\mu \mathrm{F}$ capacitor in series is connected through a switch to $200\mathrm{V}$ direct supply. Across the capacitor is a neon bulb that lights up at $120\mathrm{V}$. Calculate the value of $R$ to make the bulb light up $5\mathrm{s}$ after the switch has been closed. $\left({\log }_{10}2.5=0.4\right)$