Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Help me solve this differential equation (Capacitor Charging)

  1. Mar 28, 2010 #1
    I'm trying to solve this:

    [tex] E = R\frac{dQ}{dt} + \frac{Q}{C}[/tex]

    from here
    You might recognize this as the charging equation for a capacitor

    I'm guessing I need to try and get (1/q)dQ or similar somewhere to get the lnQ

    but I cannot seem to get the right manipulation

    Last edited: Mar 28, 2010
  2. jcsd
  3. Mar 28, 2010 #2
    for example,
    divide the equation by dQ and write the terms with dQ and dt each to another side of the equation. Integrate both sides and you will be able to find Q(t)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook