An electric refrigerator rated at 200 waat operated 6 hour per day calculate the cost of using energy in the month of April if the cost of 1 kilowatt energy is 5 rupees
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200 W = 0.2 Kw
Therefore energy used in a day = 0.2 x 6= 1.2 Kw
April has 30 days , energy used in April = 1.2 x 30 =36 Kw therefore cost = 36x 5 = 180₹
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