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A variable, opposite external potential ...

A variable, opposite external potential `(E_(ext))` is applied to the cell `Zn |Zn^(2+) (1 M) || Cu^(2+) (1 M) |` Cu of potential 1. 1 V. When `E_(ext)` < 1. 1 V and `E_(ext)` > 1. 1 V, respectively electrons flow from :

A

anode to cathode in both cases

B

anode to cathode and cathode to anode

C

cathode to anode in both cases

D

cathode to anode and anode to cathode

Text Solution

Verified by Experts

The correct Answer is:
B
Cell is behaving as galvanic when `E_(ext)` < 1.1 V and as electrolytic when `E_(ext)` > 1.1 V
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