As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its__________?
Correct answer: D. higher internal resistance
- A. compactness
- B. lower e.m.f.
- C. small quantity of electrolyte used
- D. higher internal resistance
Explanation
Nickel-iron cells have relatively high internal resistance, causing greater internal voltage drop and energy loss than in lead-acid cells. Their lower efficiency is therefore mainly attributed to this higher internal resistance.
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