Question

Look at the Daniell cell,

The incorrect statement related to this cell is

• A. electron flow from zinc electrode to copper electrode, when applied external potential is $0.9V$
• B. current flow from zinc to copper electrode, when applied external potential is $1.5V$
• C. current flow from zinc to copper electrode when applied external potential is $0.9V$
• D. zinc electrode acts as cathode and copper as anode when applied external potential is $1.5V$

Answer 1

Answer: (C)

In Daniell cell potential is $1.1V$. Since $E_{\text{ext }}(0.9)<1.1$, so in this case, current flows from copper to zinc electrode.