If a fan of 60W, two tube lights of 40W each are used for 5 hours daily,how much electrical energy will be consumed? Also find the cost of electricity for 30 days if the cost of 1 unit is Rs4?
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Explanation:
daily power = 140 w
daily energy = 140x5= 700 wh = 0.7 kwh
daily cost = 0.7x4 = Rs2.8
monthly cost = 2.8 x 30 = Rs84
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