1. Feb 14, 2007 #1

   jst

   

   1. The problem statement, all variables and given/known data
   
   Given an equation for charge passing through a point in a circuit versus time: q = 3t^3 – t^2. Which is the correct equation for current as a function of time?
   
   2. Relevant equations
   
   
   
   3. The attempt at a solution
   
   Would it be: q', which would be 9t^2 - 2t
   
   Thanks a lot,
   
   Jason

    

   jst, Feb 14, 2007
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3. Feb 14, 2007 #2

   imastud

   

   yeah thats right you take the derivitive of q(t) with respect to t

    

   imastud, Feb 14, 2007
4. Feb 14, 2007 #3

   jst

   

   Much thanks!!!

    

   jst, Feb 14, 2007

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