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azamat
3 years ago
11

Suppose the electric company charges 10 fils per kW h. How much does it cost to use a 125 watt lamp 4 hours a day for 30 days? A

) AED 1.20 B) AED I.80 C) AED 7.20 D) none of these E) AED 1.50
Physics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

150 fils

Explanation:

Power = 125 Watt

Time 4 hours a day

Energy per day = Power x time per day = 125 x 4 = 500 watt hour

Energy for 30 days = 500 x 30 watt hour = 15000 watt hour = 15 KWH

Cost of 1 KWH = 10 fils

Cost of 15 KWH = 15 x 10 = 150 fils

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