Question

How long would it take to pass 700 C of charge through a toaster drawing 10 A of current? How many electrons would pass through the toaster in this time?

Answer 1

Given that the charge of the toaster is q =700 C

The current of the toaster is I = 10 A

We have to find the time and number of electrons.

Time can be calculated by the formula,

`t=(q)/(I)`

Substituting the values, the time will be

`\begin{gathered} t=(700)/(10) \\ =70\text{ s} \end{gathered}`

The number of electrons can be calculated by the formula,

`n=(q)/(e)`

Here, n is the number of electrons

and e is the charge of the electron whose value is

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

Substituting the values, the number of electrons will be

`\begin{gathered} n\text{ = }(700)/(1.6*10^(-19)) \\ =4.375\text{ }*10^(-17) \end{gathered}`