Question

A steady current of 0.25 ampere flows through a conductor. How many
electrons [charge 1. 6 × 10–19 C) flow through the section of the conductor in 1
second ?

Answer 1

Explanation:

$i = q \div t \\ and \: q = ne \\ = > \: i = ne \div t \\ = > \: n = it \div e$

$given \: i = 0.25 \: \\ e = 1.6 \times {10}^{ - 19} \\ t = 1 \\ n = 0.25\times 1 \div 1.6\times {10}^{ - 19 } \\ n = 1.5625 \times {10}^{18}$

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