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ExamsNEETChemistry

Internal resistance of a battery cell increases with:

  1. increase in concentration of electrolyte
  2. increase in distance between two electrodes
  3. increase in area of the plates inside the electrolyte
  4. increase in size of the electrodes

Correct answer: increase in distance between two electrodes

Solution

Internal resistance increases when the electrodes are farther apart because ions must travel a longer path through the electrolyte, causing more opposition to current. The other options generally reduce resistance by improving conductivity or increasing effective contact area.

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