question_answer

Several electric bulbs designed to be used on a 220 V electric supply line are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowed current is 5 A?  

Answer:

In parallel, equivalent power is  times  times Potential difference                                                                                                                                                   (1)  Current drawn                                                                                                                                                 (1)                                                                                                                                                                              (1) Thus, 110 bulbs can be connected in parallel with each other across the two wires of 220 V.