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10th Class Science Electricity and Circuits

  • question_answer 41)
    An electric motor takes 5 A from a 220 V line. Determine the power and energy consumed in 2h.  

    Answer:

    Here I = 5 A, V = 220 V, t = 2 h = 2 x 60 x 60 = 7200 s Power, P = VI = 220 x 5 = 1100 W Energy consumed, W = VI t = 220 x 5 x 7200 = 7920000 J  


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