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Question

How many electrons should be removed from a conductor so that it acquires a positive charge of 3.5nC?

Solution
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Given
Charge q=3.5×109

Let the nQ of electron to be removed be n
We know that
Q=ne

n=Qe

n=3.5×1091.6×1019

n=2.1875×109+19

n=2.1875×1010

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