Q. The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = $1.60 \times 10^{-19}$ C)
A) $6 \times 10^{23}$
B) $6 \times 10^{20}$
C) $3.75 \times 10^{20}$
D) $7.48 \times 10^{23}$
Explanation
[Solution] Q = 60 C; n = 60/(1.6 × $10^{-19}$) = 3.75 × $10^{20}$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.