Question

how many electrons are there in -10 coloumb of charges

Answer 1

One coulomb is the fundamental SI unit of charge. It is defined as the charge in one Ampere of current passed for one second.

Now for an electron, the amount of charge it carries is 1.6*10^-19 C.

So for making a charge of -10 Coulomb, the number of electrons required will be:

n = -10/(1.6*10^-19)

n = -6.242 number of electrons

Answer 2

Answer :-

One electron possesses a charge of

1.6 ×10-19C,

i.e., 1.6 ×10-19C of charge is contained in 1 electron.

∴ 1 C of charge is contained in

1/1.6 x 10-19 

= 6.25 x 1018 

= 6 x 1018

Therefore, 6 x 1018 electrons constitute one coulomb of charge.

Note :- You can Write 1018 as 10^18 also ✔

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