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  4. Though the electron drift velocity is small and electron charge is very small, a conductor can carry an appreciably large current because

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Q. Though the electron drift velocity is small and electron charge is very small, a conductor can carry an appreciably large current because

KCETKCET 2019Electromagnetic Induction

Solution:

Current I =$ne AV_{d}$
The large value of I is because of number density of free electrons in a conductor (n) which is of the order n = $10^{28} \, per \,m^{3}$