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NEETChemistryElectrochemistry

When is the term "cell electromotive force (emf)" used in relation to a galvanic cell?

Options

  1. AWhen current is drawn through the cell.
  2. BWhen the cathode has a positive potential.
  3. CWhen the anode has a negative potential.
  4. DWhen no current is drawn through the cell.

Correct answer

D. When no current is drawn through the cell.

Step-by-step solution

It is called the cell electromotive force (emf) of the cell when no current is drawn through the cell. It is now an accepted convention that we keep the anode on the left and the cathode on the right while representing the galvanic cell.

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