three search bulbs burn for 5 hours at a stretch what is the energy consumed calculate the cost in rupees if the rate is 70 paise per unit calculate the resistance of a 2km long copper wire of radius 2mm resistivity of copper 1.72 ×10 to the power -8
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hours at a stretch what is the energy consumed calculate the cost in rupees if the rate is 70 paise per unit calculate the resistance of a 2km long copper wire of radius 2mm resistivity of copper 1.72 ×10 to the power -8
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