Question

The no. of electrons from 1 coulomb of charge is -
a. (i) 6.25x 10^20
(ii) 6.25x10^21
(iii) 6.25x10^18
(iv) 6.25x10^19

plz give answer fast​

Answer 1

Answer:

One electron has a charge equivalent of 1.6x10^-19 coulomb. can be written as 1.6x10^-19 C = 1 electron-charge

Explanation:

This is written as

1 C =( 1 / (1.6x10^-19) )electrons.

Dividing 1 by 1.6x10^-19 gives a value of 6.25x10^18 electrons per coulomb.

One ampere equals 1 coulomb per second. Therefore, a vacuum cleaner with a 3.5-amp motor uses 3.5 coulomb per second multiplied by 6.25x10^18 electrons/coulomb, or

21.875x10^18 electrons per second. That is 21,875,000,000,000,000,000 electrons every second!