Question

How many electrons constitute a current of 1 microampere.

Answer 1

6.25*10¹²electrons constitute a current of 1 microampere

Answer 2

Answer:

1 microampere contains $6.25 \times 10^{12}$  number of electrons.

The charge on one electron is $1.602 \times 10^{19}$ coulombs. This can be used  to deduce the number of electrons that 1 microampere contains.  

Since, 1 coulomb = $6.242 \times 10^{18}$ electrons

And we know that, “1 ampere” is equal to “1 coulomb per second”,

1 ampere = $6.242 \times 10^{18}$ electrons/sec

1 ampere = 1000 milliampere

1 millioampere =1000 microampere