Chapter 32, Problem 46A

The charge on an electron is $1.6\times {10}^{-19}C$. How many electrons make a charge of 1 C?

To determine

The number of electrons to make a charge of 1C.

Answer to Problem 46A

The number of electrons is $0.63\times {10}^{19}$

Explanation of Solution

Given:

The charge on the electron is 1.6×10-¹⁹C

Formula used:

Charge = (number of electrons) (charge on electron)

Calculation:

Substitute the values,

  $\begin{array}{l}q=ne\\ n=\frac{q}{e}=\frac{1}{1.6\times {10}^{-19}}\\ n=0.63\times {10}^{19}\end{array}$

Conclusion:

The number of electrons to make a charge of 1C is $0.63\times {10}^{19}$