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an electric refrigerator rated 1kw operates 5 hours/day.the cost of energy to operate it for 30 days is RS3.00 per unit is |
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Answer» Answer: Rs 450.00 Explanation: Total energy consumption per DAY = 1000J × 5 × 3600=18000 kJ Energy per each UNIT = 1kWh = 1000 × 3600 = 3600 kJ No.of units consumed per day = 18000/3600 = 5 units No.of units consumed for 30 DAYS = 5 × 30 = 150 units therefore, cost of energy per 30 days = 150 units × Rs 3.00 = Rs 450.00 |
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