Internal battery resistance: In the figure, when the terminal voltage Vab of the battery is equal to 20 V, how much current passes through the battery, including its direction? 
A) 4 A, from a to b
B) 5 A, from a to b
C) 6 A, from a to b
D) 4 A, from b to a
E) 5 A, from b to a
Correct Answer:
Verified
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