An electric refrigerator rated 400w operates 8hrs and and an electric heater 1000w is used for 2 hrs and an electric iron of 600 w operates 2 hr per day. calculate the electrical energy consumed by these appliances.also calculate the cost of energy to operate it for 30 days at rs.3 per unit?
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rs.40 per unit
Explanation:
just multiply the th given and final x
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