The internal resistance of an accumulator battery of emf 6 V is 
when it is fully discharged. As the battery gets charged up, its internal resistance decreases to 
. The battery in its completely discharged state is connected to a charger which maintains a constant potential difference of 9 V. Find the current through the battery
Text Solution
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[ 0.3 A, 3 A]
Sol. net emf while charging
Current 
When completely charged.
Internal resistance ' 
' 
Current 
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