CBSE Class 12 · 2001 · All India Compartment · Redox Reactions and ElectrochemistryVery Short Answer

Under what conditions will a galvanic cell send no current into the outer circuit?

Solution

No current flows when the internal circuit is broken — for example, if the salt bridge is not used (charge builds up in the half-cells and the reaction stops).
Equally, when the cell reaction attains equilibrium,

E_{ce l l} = 0

and the cell sends no current.

CBSE Class 12 Board · 2001 · All India Compartment · Subjective

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