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Author Question: How long will it take a charged 80-F capacitor to lose 20 of its initial energy when it is allowed ... (Read 96 times)

123654777

Hero Member
Posts: 585

on: Jul 28, 2018

How long will it take a charged 80-F capacitor to lose 20 of its initial energy when it is allowed to discharge through a 45- 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

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af

Sr. Member
Posts: 356

Reply #1 on: Jul 28, 2018

Answer to Question 1

c

Answer to Question 2

b

123654777

Hero Member
Posts: 585

Reply #2 on: Jul 28, 2018

Thanks

af

Sr. Member
Posts: 356

Reply #3 on: Jul 28, 2018

Welcome

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Author Question: How long will it take a charged 80-F capacitor to lose 20 of its initial energy when it is allowed ... (Read 96 times)

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