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Current provided by a battery is maximum when
  • a)
    internal resistance is equal to external resistance
  • b)
    internal resistance is greater then external resistance
  • c)
    internal resistance is less than external resistance
  • d)
    none of these
Correct answer is option 'A'. Can you explain this answer?
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Current provided by a battery is maximum whena)internal resistance is ...
Current provided by a battery is maximum when internal resistance is equal to external resistance. As a battery discharges, not only does it diminish its internal store of energy, but its internal resistance also increases (as the electrolyte becomes less and less conductive), and its open-circuit cell voltage decreases (as the chemicals become more and more dilute). The most deceptive change that a discharging battery exhibits is increased resistance.
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Current provided by a battery is maximum whena)internal resistance is ...
Current provided by a battery is maximum when internal resistance is equal to external resistance.
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