(A) The electromotive force (EMF) of a cell is equal to the potential difference across its terminals when no current is flowing.
(B) Voltage drop happens in a cell due to internal resistance when current flows through it.
(C) If multiple identical cells are connected in series, the total EMF decreases.
(D) If multiple identical cells are connected in parallel with their positive terminals on the same side, the total EMF remains same as individual cell.
Which of the above statement(s) is/are correct?
Solution:
Statements (A), (B), and (D) are conceptually correct definitions and behaviors of EMF and cells. Statement (C) is incorrect because series cells increase total EMF.
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