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

  • question_answer Three light bulbs of 40 W, 60 W and 100 W are connected in series with 220 V source. Which one of the bulbs will glow brightest [MP PMT 1995; UPSEAT 2002; BCECE 2005]

    A)            40 W

    B)            60 W

    C)            100 W                                      

    D)            All with the same brightness

    Correct Answer: A

    Solution :

               In series \[{{P}_{Consumed}}\propto \text{Brightness}\propto \frac{1}{{{P}_{Rated}}}\]

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