C-01-Q108mediumsingle_mcqThe charge of an electron used in the SI definition is—a1.602176634×10−191.602176634 \times 10^{-19}1.602176634×10−19 Cb9.109×10−319.109 \times 10^{-31}9.109×10−31 Cc6.626×10−346.626 \times 10^{-34}6.626×10−34 Cd1.380649×10−231.380649 \times 10^{-23}1.380649×10−23 C