Question

La intensidad de corriente que circula por un conductor es 2μA. ¿Que tiempo demoraran 5x1013 electrones en cruzar una determinada seccion transversal del conductor?

Answer 1

Answer:

t = 4 seconds

Explanation:

The question is "The intensity of current flowing through a conductor is 2μA. How long will it take 5x1013 electrons to cross a certain cross section of the conductor? "

Current, $I=2\ \mu A=2\times 10^{-6}\ A$

No of electrons, $n=5\times 10^{13}$

We need to find how long will it take to given no of electrons to cross a certain cross section of the conductor.

Electric current,

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

t is time

Also, q = ne

$I=\dfrac{ne}{t}\\\\t=\dfrac{ne}{I}\\\\t=\dfrac{5\times 10^{13}\times 1.6\times 10^{-19}}{2\times 10^{-6}}\\\\t=4\ s$

So, it will take 4 seconds.