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Question:

 

What is the value of charge on a body that carries 20 excess electrons?

Answer:

Hi Lavkesh, that's a very interesting question. 

So, as we know the quantisation of charge q = n.e

where n is the number of charges and e  is charge of an electron. i.e e = 1.6 x 10-19 C,

So, as per the question we can write:

q = 20 x 1.6 x 10-19 C = 3.2 x 10-18 C

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