Question

how many electrons should pass through a conductor per minute so that electric current through
the conductor is of 1 mA.
(​

Answer 1

Answer:

charge on electron is = 1.6 x 10^-19C

Q=N*e

N=q/e

N=1/1.6x10^-19

n=0.625x10^19

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Answer 2

6.25*10^(15)

Explanation:

We are asked to find out the number of electrons passing through a conductor to produce a current of 1mA.

We know that the amount of electrons passing through a conductor to produce 1A of current is ,

$\frac{ne}{t} =i\\\\t=1,e=1.6*10^-19,i=1\\\\n=\frac{1}{1.6*10^-19} \\\\n=6.25*10^(18)$

So to produce a current of 1A we need the abow number of electrons to pass through the conductor in one second.

If we need to produce 1mA of current then the number of electrons required to pass is

$n=6.25*10^(18)*10^-3\\n=6.25*10^(15)$

The above number of electrons need to pass through the conductor to produce the required current.