Question

calculate the number of electrons constituting one coulomb of charge

Answer 1

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Solution:

We know that the a electron have charge of 1.6 × 10−^19 C

∴ e =1.6 × 10^-19 C

Total charge required 1Coulomb.

∴ q = 1C

Since q=ne

⇒ n =q/e

⇒ n =  1/1.6 × 10^−19

⇒6.25×10^18

⇒6×10^18 electrons.

Answer 2

Given that

Charge (Q) = 1 C

Electron (e) = 1.6× 10^-19

Number of electron (n) = ?

Q= ne

1 C = n × 1.6×10^-19 C

n = 1/(1.6×10^-19)

n = 6.25 × 10^18 electron