The emf and the internal resistance of a battery are shown in the figure.If a current of 7.8 A is established through the battery from b to a,what is the terminal voltage V_ab of the battery? A)-30 V B)80 V C)30 V D)-80 V E)zero

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The Answer of The emf and the internal resistance of a battery are shown in the figure.If a current of 7.8 A is established through the battery from b to a,what is the terminal voltage V_ab of the battery? A)-30 V B)80 V C)30 V D)-80 V E)zero

The Emf and the Internal Resistance of a Battery Are