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An electric lamp has resistance of 400 ohms. It is connected to a supply of 250V . If the price of electric energy is Rs 1.20 per unit , calculate the cost of lighting the lamp for 20 hours . |
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Answer» an electric lamp has resistance of 300 words it is a connector SUPPLY 200 volt is the PRICE of electric energy 100 unit calculate the cost of lighting the lamp for 24 hours |
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