What is the Equation for Current as a Function of Time in a Circuit?

[jst]

Homework Statement

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?

Homework Equations

The Attempt at a Solution

Would it be: q', which would be 9t^2 - 2t

Thanks a lot,

Jason

 

[imastud]

yeah that's right you take the derivative of q(t) with respect to t

 

[jst]

Much thanks!