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A copper wire of mass 20 g carries a cur...

A copper wire of mass 20 g carries a current of 6.023 A. What fraction of the total number of free electrons present in copper wire flows through the cross-section of the copper wire in 2 s ?
(gram atomic weight of copper = 63.5 g)

Text Solution

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(i) Number of atom (n) = mass of the susbtance ` xx ` number of atoms in one gram .
Number of electrons = n `xx` no. of electron in each atom
`i=(Q)/(t)`
` q= n bare`
(ii) `(127)/(64 xx 10^(4))`
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