Question

An object has an excess charge of −1.6 × 10−17 C. How many excess electrons does it have?

Answer 1

Given:

The charge on the object is

`q=-1.6*10^(-17)\text{ C}`

Required: Number of electrons

Step-by-step explanation:

The number of electrons can be calculated using the quantization of charge

`q\text{ = ne}`

Here, n is the number of electrons

e is the charge on the electron whose value is

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

On substituting the values, the number of electrons will be

`\begin{gathered} n=(q)/(e) \\ =(-1.6*10^(-17))/(-1.6*10^(-19)) \\ =100 \end{gathered}`

Final Answer: The object has an excess of 100 electrons.