A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other. What is the final charge on the 6.0-mF capacitor?
A. 20 mC
B. 8.0 mC
C. 10 mC
D. 12 mC
E. 230 mC
Answer: D
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