Question

calculate the number of electrons constituting one coulomb of charge.......

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Answer 1

We know that the charge on an electron is negative and it is

-1.6⨯10^-19 coulomb.

We need to calculate the number of electrons constituting one coulomb of charge

e = 1.6 × 10^-19 C

Total charge required for 1Coulomb.

q = 1C……….(1)

The formula to calculate the charge is

q = ne

where, q = charge

            e = number of electrons

n = q/e……….(2)

Substituting equation (1) in equation (2) we get

n = 1/(1.6 × 10^-19)

n = 6.25 × 10^18 electrons ≅ 6 × 10^18 electrons

So 1 Coulumb of charge contains 6 × 10^18 electrons.

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Answer 2

Answer:-

$\red{\bigstar}$$\large\leadsto\boxed{\rm\green{6.25 \times 10^{18}}}$

• Solution:-

We know,

$\red{\bigstar}$$\boxed{\bf\pink{Q = ne}}$

here,

Q = Charge

n = number of electrons

e = charge on the electron

• Given that :-

$\\ \bf\purple{Q = 1 C} \\ \\ \sf{and} \\ \\ \bf\purple{e = 1.6 \times {10}^{ - 19} C}$

• Substituting the values:-

$\dashrightarrow$ $\sf 1 C = n \times 1.6 \times 10^{-19} C$

$\dashrightarrow$ $\sf n = \dfrac{1 \: C}{1.6 \times {10 }^{ - 19}\: C}$

$\dashrightarrow$ $\sf{n = 0.625 \times {10}^{19}}$

$\dashrightarrow$ $\bf\red{n = 6.25 \times 10^{18}}$

Therefore, the number of electrons constituting one Coulomb of charge is $\bf{6.25 \times 10^{18}}$