3 electric bulbs of rating 60 w wach are joined in series and then connected to electric mains. the power consumed by these three bulbs will b

20 w

my question is.. how?

the answer is very simple that if these three bulbs are connected in series they will get equal flow of current in each bulb nd  most simple is that divide the 60w by the bulbs that is three and the answer will get 20 as per question.