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An object possessing an excess of 6.0x10^6 electrons has a net charge of

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A single electron has a charge of

e=-1.6 \cdot 10^(19)C
Therefore, if we have an excess of
N=6.0\cdot10^6 electrons, the total net charge will be the product between the charge of a single electron and the total number of electrons in excess:

Q=Ne=(6.0\cdot10^6)(-1.6 \cdot 10^(-19)C)=9.6 \cdot 10^(-13)C
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