COMEDK · Physics · 17. Electrostatics
The number of electrons in \(1 \mathrm{C}\) of charges is
- A \(6.25 \times 10^{18}\)
- B \(6.25 \times 10^{16}\)
- C \(6.25 \times 10^{10}\)
- D \(6.25 \times 10^{12}\)
Answer & Solution
Correct Answer
(A) \(6.25 \times 10^{18}\)
Step-by-step Solution
Detailed explanation
Charge, \(q=1 \mathrm{C}\) If \(n\) be the total number of electrons in \(1 \mathrm{C}\) of charge, then \(q=n e\) \(\begin{aligned} \Rightarrow \quad n &=\frac{q}{e} \\ &=\frac{1}{1.6 \times 10^{-19}} \\ &=6.25 \times 10^{18} \text { electrons } \end{aligned}\)
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