Question

A body has charge (q) on it. Which of following is not the possible value of charge (q) on the body ?

• A. $1.6\times {10}^{-19}$
• B. $3.2\times {10}^{-19}$
• C. $4.2\times {10}^{-19}$
• D. $9.6\times {10}^{-19}$

Answer 1

The correct option is C $4.2\times {10}^{-19}$

Quantization of charge tells that amount of charge (q) on a body exists as an intergral multiple of charge on one electron(e). Which means it can be written as:
q = ne
Where
e = $1.6\times {10}^{-19}$ C
n = 0,1,2.....(both positive and negative integers)

From the given possible values only option c is not an integral multiple of e.

Hence option C is the correct answer