A 25-?F capacitor charged to 50 V and a capacitor C charged to 20 V are connected to each other, with the two positive plates connected and the two negative plates connected. The final potential difference across the 25-?F capacitor is 36 V. What is the value of the capacitance of C?
A. 43 ?F
B. 29 ?F
C. 22 ?F
D. 58 ?F
E. 63 ?F
Answer: C
Physics & Space Science
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