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An object contains 4.9*10^7 excess electrons. What is its net charge?

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Accepted Answer

The charge on the electron is 1.602 x 10^-19 Coulomb.4.9 x 10^7 of them add up to (4.9 x 10^7) x (1.602 x10^-19) = 7.85 x 10^-12 Coulomb .

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