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Question: Answered & Verified by Expert
The number of electrons in $1 \mathrm{C}$ of charges is
PhysicsElectrostaticsCOMEDKCOMEDK 2015
Options:
  • A $6.25 \times 10^{18}$
  • B $6.25 \times 10^{16}$
  • C $6.25 \times 10^{10}$
  • D $6.25 \times 10^{12}$
Solution:
1649 Upvotes Verified Answer
The correct answer is: $6.25 \times 10^{18}$
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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