The Emf and the Internal Resistance of a Battery Are

question 49

Multiple Choice

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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