Question

tow tungestan bulbs of power 50w and 60w work on 220v potential difference if they are connected in parallel how much current will flow in the main conductor​

Answer 1

I=V/P=220/50=4.4. _______{1}

I=V/P=220/60=3.667_______{2}

final current =eqn 1 +eqn 2= 4.4 + 3.667=8.067 A

Answer 2

The current is the main conductor will be the sum of the current drawn by each bulb individually.  So to calculate the current in amps for each bulb divide the watts by the volts must be use.

50W + 60W = 110W that's the total power consumed.

Hence they are connected in parallel across 220vac, the current flowing on the source conductor is:

I = Power/Voltage

 = 110W/220V

= 8.067 A