Author Question: A capacitor of unknown capacitance C is charged to 100 V and then connected across an initially ... (Read 69 times)

cabate · **on:** Jul 28, 2018

A capacitor of unknown capacitance C is charged to 100 V and then connected across an initially uncharged 60-mF capacitor. If the final potential difference across the 60-mF capacitor is 40 V, determine C.
a. 49 mF
b. 32 mF
c. 40 mF
d. 90 mF
e. 16 mF

Question 2

A 30-mF capacitor is charged to 40 V and then connected across an initially uncharged 20-mF capacitor. What is the final potential difference across the 30-mF capacitor?
a. 15 V
b. 24 V
c. 18 V
d. 21 V
e. 40 V