Physics · UNITS AND MEASUREMENT

In the revised SI system (2018), the base unit 'ampere' is defined by fixing the numerical value of elementary charge \( e \) to be \( 1.602176634 \times 10^{-19} \) when expressed in C (or A s). If a current of \( 1.6\text{ A} \) flows through a conductor for \( 10\text{ seconds} \), the total number of electrons passing through any cross-section is closest to:

1. A
   \( 1 \times 10^{19} \)
2. B
   \( 1 \times 10^{20} \)
3. C
   \( 1.6 \times 10^{19} \)
4. D
   \( 6.25 \times 10^{18} \)