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
c
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