The series combination of two batteries both of the same emf 10 ?, but different internal resistance of 20 Ω and 5 Ω , is connected to the parallel combination of two resistors 30 Ω and ? Ω. The voltage difference across the battery of internal resistance 20 Ω is zero, the value of ? (in Ω) is
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The series combination of two batteries both of the same emf 10 ?, but different internal resistance of 20 Ω and 5 Ω , is connected to the parallel combination of two resistors 30 Ω and ? Ω. The voltage difference across the battery of internal resistance 20 Ω is zero, the value of ? (in Ω) is
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