Q. The electrochemical cell stops working after some time because ________
A) One of electrodes completely vanishes
B) Electrode potential of both the electrodes becomes zero
C) The reaction reverses its direction
D) Electrode potential of both electrodes equalizes
✔ Correct Answer: Electrode potential of both electrodes equalizes
Exam Insight
An electrochemical cell stops working over time because the reactants are consumed, and the system reaches chemical equilibrium, halting the redox reactions.