survey five homes in your neighbours and enlist the electrical appliances used with their capacity and duration of uses also calculate cost of 1 unit of 4 rupees in class 9 physics
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the electrical appliances used with their capacity and duration of uses also calculate cost of 1 unit of 4 rupees in class 9 physics
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the electrical appliances used with their capacity and duration of uses also calculate cost of 1 unit of 4 rupees in class 9 physics
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