Question

How many elementary charges are found in each of the following:(a) 3.2 x 10-19 C _____ (b) 8.0 x 10-19 C _____ (c) 4.8 x 10-19 C _____

Answer 1

Given that the charge,

(a)

`q1=3.2*10^(-19)\text{ C}`

(b)

`q2=8\text{ }*10^{-19\text{ }}C`

(c)

`q3=4.8*10^(-19)\text{ C}`

The values of elementary charge are

`e=1.6*10^(-19)\text{ C}`

(a) The number of elementary charges in q1 is

`\begin{gathered} q1=n1e \\ n1=(q1)/(e) \\ =(3.2*10^(-19))/(1.6*10^(-19)) \\ =2\text{ } \end{gathered}`

(b) The number of elementary charges in q2 is

`\begin{gathered} q2=n2e \\ n2=(q2)/(e) \\ =(8*10^(-19))/(1.6*10^(-19)) \\ =5 \end{gathered}`

(c) The number of elementary charges in q3 is

`\begin{gathered} q3=n3e \\ n3=(q3)/(e) \\ =(4.8*10^(-19))/(1.6*10^(-19)) \\ =3 \end{gathered}`