An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?

Here,  
Ptential of the generator, V = 220 V
Current flowing across the electric bulb, I = 0.50 A
Therefore,
Power of bulb, P = VI
                         =  220 V x 0.50 A
                         = 110 W.