A copper wire of diameter 0.16 cm is connected in series to an aluminium wire of diameter 0.25 cm. A current of 10 A is passed through them. Find (i)

A copper wire of diameter 0.16 cm is connected in series to an aluminium wire of diameter 0.25 cm. A current of 10 A is passed through them. Find (i)
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A copper wire of diameter 0.16 cm is connected in series to an aluminium wire of diameter 0.25 cm. A ... of aluminium wire is `10^(29) m^(-3)`.
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