Question

Three electric bulbs of rating 60W each are joined in series and then connected to electric mains. The power consumed by these three bulbs will be

• A. 180 W
• B. 60 W
• C. 20 W
• D. $\frac{20}{3}W$

Answer 1

Answer: (C)

20 W

Answer 2

In series $P^{'} = \frac{P}{n} = \frac{60}{3} = 20watts$