Question

the internal resistance of a secondary cell is low where as the internal resistance of a primary cell is high . why ??

Answer 1

Secondary cell has to be or is periodically recharged and primary cell is use and throw so low resistance and slow and steady current and in secondary cell has low resistance to provide current of greater magnitude

Answer 2

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The internal resistance (IR) of a battery is defined as the opposition to the flow of current within the battery.