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CBSE Class 10 Answered

In 1 columb of charge how many no. of electrons are present:
6*10^18   or      6.25*10^18............
 
Asked by devyanipathak99 | 28 Jun, 2014, 01:46: PM
answered-by-expert Expert Answer

We know that the charge of an electron, e = 1.6 × 10−19 C

Total charge Q= 1 C

Q = n e,

Where Q is the charge , n the number of electrons and e the charge of an electron.

n = Q / e

= 1 C / 1.6 × 10−19 C

=0.625 × 10 -19

= 6.25 × 1018

Therefore the number of electrons constituting one coulomb of charge = 6.25 × 1018

On rounding this can be written approximately as 6 × 1018

Answered by Jyothi Nair | 29 Jun, 2014, 02:51: PM

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