JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors Question Bank Heating Effect of Current

  • question_answer 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 [MP PET 2003; CBSE PMT 2004]

    A)            180 W                                      

    B)            60 W

    C)            20 W                                        

    D)            \[\frac{20}{3}W\]

    Correct Answer: C

    Solution :

                In series \[{P}'=\frac{P}{n}=\frac{60}{3}=20\,watts\]

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