NEET Physics Ohm's Law MCQ Question
Which combination of statements about the behavior of cells in an electric circuit is correct?
The equivalent emf of cells in series is the sum of their individual emfs, and the equivalent internal resistance is the sum of their internal resistances.
The maximum current from a cell occurs at zero external resistance, and this current is always safe for the cell's operation.
In a series combination of cells, if one cell has a higher emf than another, the total emf is equal to the higher emf only.
The internal resistance of a cell does not affect the total voltage in a circuit when cells are connected in series.
Correct Answer
Detailed Explanation
The equivalent emf of a series combination of cells is indeed the sum of individual emfs, and the equivalent internal resistance is the sum of their internal resistances, as stated in the NCERT context. Options B, C, and D reflect misconceptions about current safety, emf addition, and the role of internal resistance.
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