Question

How long will it take for 4x10^16 electrons to pass a point in a conductor, if the current is 1500 micro amps.

t=

Answer 1

$t=\frac{q}{I}$

$q=Ne=4\cdot10\cdot10^{16}\cdot1.6\cdot10^{-19}=6.4\cdot10^{-3}C$

$t=\frac{6.4\cdot10^{-3}}{1500\cdot10^{-6}}=4.27s$