Physics - Current Electricity Question with Solution | TestHub

First, a set of$n$equal resistors of$10 \mathrm{\Omega }$each are connected in series to a battery of E.M.F.$20 \mathrm{V}$and internal resistance$10 \mathrm{\Omega }.$A current$I$is observed to flow. Then, the$n$resistors are connected in parallel to the same battery. It is observed that the current is increased$20$times, then the value of$n$is ___________.