How long will it take a charged 80-mF capacitor to lose 20 of its ...

[javeds]

How long will it take a charged 80-mF capacitor to lose 20 of its initial energy when it is allowed to discharge through a 45-W resistor?
 a. 0.92 ms
  b. 0.64 ms
  c. 0.40 ms
  d. 0.19 ms
  e. 0.80 ms

Question 2

In an RC circuit, what fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for 3.0 time constants?
 a. 0.84
  b. 0.90
  c. 0.75
  d. 0.60
  e. 0.03

[ergserg]

Answer to Question 1

C

Answer to Question 2

B

[javeds]

Both answers were spot on, thank you once again

[ergserg]

Great! Please up vote