A 25-F capacitor charged to 50 V and a capacitor C charged to 20 ...

[WhattoUnderstand]

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

Question 2

A 6.0-F capacitor charged to 50 V and a 4.0-F capacitor charged to 34 V are connected to each other, with the two positive plates connected and the two negative plates connected. What is the total energy stored in the 6.0-F capacitor at equilibrium?
 a. 6.1 mJ
  b. 5.7 mJ
  c. 6.6 mJ
  d. 7.0 mJ
  e. 3.8 mJ

[sabina576]

Answer to Question 1

c

Answer to Question 2

b

[WhattoUnderstand]

Gracias!

[cassie_ragen]

Thanks for the timely response, appreciate it