Question

multiple choice question
a coulomb (c) is equivalent to the charge resulting from the transfer of

6.022 x 10²³ atoms of hydrogen
6.24 x 10¹⁸ electrons
electrons due to contact
electrons due to friction

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Explanation:

The charge of one electron is \(e = 1.6\times10^{-19}\space C\). To find the number of electrons \(n\) in a coulomb (\(Q = 1\space C\)), we use the formula \(Q=ne\). Rearranging for \(n\), we get \(n=\frac{Q}{e}\). Substituting \(Q = 1\space C\) and \(e = 1.6\times10^{-19}\space C\), we have \(n=\frac{1}{1.6\times 10^{-19}}=6.25\times10^{18}\approx6.24\times 10^{18}\) electrons.

• \(6.022\times10^{23}\) atoms of hydrogen is Avogadro's number and not related to charge in terms of coulombs directly.
• "Electrons due to contact" and "electrons due to friction" are too vague and do not give a quantitative measure equivalent to 1 coulomb.

Answer:

6.24 x 10¹⁸ electrons