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0 An aluminium wire of diameter 0 24 cm is connected in series to a...

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0 An aluminium wire of diameter 0 24 cm is connected in series to a copper wire of diameter 0 61 cm The wires carry an electric current of O A Find i current density in the aluminium wire ii drift velocity of electrons in the copper wire Given the number of electrons per cubic meter volume of copper is 8 4 X 1028 Ans 2 2 X 106 Am 3 7 X 104 ms

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