How long will it take the capacitor to charge to about 63% of the battery’s voltage when first connected?

  • 3
    \$\begingroup\$ This is an example of a homework style question. What have you tried? Have you attempted to solve it, and if so, what did you get? You must show some work/effort and explain what you did or did not understand. This site is not a homework-answering service. Edit your question to show what you've attempted and explain where you are stuck. We are happy to help in that case. \$\endgroup\$
    – JYelton
    Apr 29, 2020 at 0:07
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    \$\begingroup\$ Hint: 'about 63%' means one time constant for an exponential rise/fall. \$\endgroup\$
    – MarkU
    Apr 29, 2020 at 0:16
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    \$\begingroup\$ I’m voting to close this question because it is a homework question without any demonstrated effort. \$\endgroup\$ Apr 29, 2020 at 4:55
  • \$\begingroup\$ Welcome to the site. Please note that it's not a free design house, homework-answering service or on-line technical encyclopedia, copied out to you on demand. People will help you take the next step if your question shows you've done as much as you possibly could on your own - which yours doesn't, I'm afraid. Please edit your question and greatly improve it. Show your work and findings so far in considerable detail with any schematic. The schematic tool here is easy to use. The better the quality of question, the better the quality of the answers you will attract. Again, a very warm welcome. \$\endgroup\$
    – TonyM
    Apr 29, 2020 at 6:03

1 Answer 1

  • C = .1E-3 F
  • R = 15E3 Ω

τ = RC

(RC time constant)

enter image description here


I don't want to do all the work for this homework style question. Instead, here's an idea:

  1. Find τ.

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