Question

1 $\mu$ A current represents how many electron/s crossing a section conductor through which it passes is:

• A. $6.25$ x 10${}^{12}$
• B. $12.5$ x 10${}^6$
• C. $3.125$ x 10${}^{12}$
• D. $3.125$x 10${}^6$

Answer 1

Answer: (A)

$6.25$ x 10${}^{12}$

Current is amount of charge flowing per second.

so $I=\frac{Q}{T}$

${10}^{-6}=n\times 1.6\times {10}^{-19}$

$n=\frac{1}{1.6}\times {10}^{13}$ $=\frac{100}{16}\times {10}^{12}$

$n=6.25\times {10}^{12}$