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10 June, 20:11

A metal sphere is insulated electrically and is given a charge. If 21 electrons are added to the sphere in giving a charge, how many Coulombs are added to the sphere? A metal sphere is insulated electrically and is given a charge. If 21 electrons are added to the sphere in giving a charge, how many Coulombs are added to the sphere? - 3.4 * 10-20 C - 21 C - 34 C - 3.4 * 10-18 C

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  1. 10 June, 20:27
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    Answer: - 3.4. 10⁻¹⁸ C

    Explanation:

    Each electron carries a charge of - 1.6. 10⁻¹⁹ C, which is the smallest discrete charge possible in the universe.

    If we add 21 electrons to the insulated sphere, the added charge will be as follows:

    Q = 21. 1.6. 10⁻¹⁹ C = - 3.4. 10⁻¹⁸ C.
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