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10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    An air conditioner is rated 260 V, 2.0 kW. The air conditioner is switched on for 10 hours each day. What is electrical energy consumed in 30 days?

    A) 20 kW h           

    B) 2000 kW h        

    C) 600 kW h      

    D) 420 kW h

    Correct Answer: C

    Solution :

     V = 260 V, P = 2 kW = 2000 W Time for which air conditioner is switched on ! = 10 hours \[\times \] 30 = 300 hours Electrical energy consumed in 30 days \[=p\times t=2000\times 300\] \[=600000\,Wh=600\,kW\,h\]


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