Five identical electric filament lamps numbered 1 to 5 are joined in parallel across an ideal source as…
Five identical electric filament lamps numbered 1 to 5 are joined in parallel across an ideal source as shown in the figure. When all the bulbs are working, reading in the ammeter is $3 \mathrm{~A}$. When lamp ' $\mathrm{l}$ ' is switched off, reading of the ammeter is