Railways General Science & Technology Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Sample Paper Current Electricity Sample Test Paper-9

  • question_answer
    How much energy in kilowatt hour is consumed in operating ten 50 watt bulbs for 10 hours per day in a month (30 days)

    A)  1500   

    B)  5,000

    C)  15                   

    D)  150

    Correct Answer: D

    Solution :

    [d] Energy consumed in \[kWh=\frac{watt\times hour}{1000}\] \[\Rightarrow \] For 30 days, \[P=\frac{10\times 50\times 10}{1000}\times 30=150\,kWh\]


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