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Question
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
Solution
6.25 × 1018 electrons
Since the charge of an electron is `1.6xx10^(-19)C` 6.25 × 1018 electrons taken together constitute (6.25 × 1018 × 1.6 × 10−19 C) or 1 coulomb of charge.
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