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Homework Help: Seemingly easy problem having to do with current?

  1. Feb 22, 2010 #1
    1. The problem statement, all variables and given/known data

    In a typical lightning strike, 2.5 C flows from cloud to ground in .020 ms. What is the current during the strike?

    2. Relevant equations

    I've been doing 2.5 C / .0002 s = 12,500. However, this is not right.

    3. The attempt at a solution

    Am I using the wrong formua? This problem seems so easy I don't know where I'm messing up.
  2. jcsd
  3. Feb 22, 2010 #2
    Hello csimon current =charge/time so it seems you are using the correct formula.The time is 0.02ms=0.00002s not 0.0002ms
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