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The emf and the internal resistance of a battery are 31V and 2.0 ohm, respectively. When...

The emf and the internal resistance of a battery are 31V and 2.0 ohm, respectively. When the terminal voltage of the battery is 17.4, what is the current through the battery?

A. 6.8 A, from b to a

B. 8.7 A from b to a

C. 6.8 A from a to b

D. 8.7 A from a to b

E. 16 A from b to a

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