how many electrons (added or removed) are necessary to produce a charge of -4mc?

Question

how many electrons (added or removed) are necessary to produce a charge of -4mc?

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Trúc Chi 5 years 2021-08-11T17:28:38+00:00 1 Answers 14 views 0

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  1. thugiang
    0
    2021-08-11T17:30:32+00:00
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    Answer:

    0.25 x 10^16 electrons

    Explanation:

    Given:

    Q = -4 mC

    Q = (-4 / 1000) C

    Q = -0.004 C

    To Find:

    No. of electrons = ?

    Solution:

    Q = n x e

    -0.004 = n x (-1.6) x 10^-19 C

    -4 x 10^-3 x 10^19 / (-1.6) = n

    10^16/4 = n

    Therefore, n = 0.25 x 10^16 electrons

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