Number of electrons removed to acquire charge – Rankers Physics
Topic: Electrostatics
Subtopic: Properties of Charges

Number of electrons removed to acquire charge

The number of electrons that should be removed from a metal coin such that coin acquires a positive charge of \(10^{-10}\text{ C}\) is
\(1.6 \times 10^{-19}\)
\(6.25 \times 10^9\)
\(6.25 \times 10^8\)
\(1.6 \times 10^8\)

Solution:

By quantization of charge, \(q = ne\). Solving for \(n\), we get \(n = \frac{q}{e} = \frac{10^{-10}\text{ C}}{1.6 \times 10^{-19}\text{ C}} = 6.25 \times 10^8\).

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