Electrical charge on Capacitor

1. Jan 15, 2014

patep023

1. The problem statement, all variables and given/known data

A dc current of 3 A flows through an initially discharged capacitor.
After 2 micro s what is the electrical charge on the capacitor?

2. Relevant equations
q(t)= integral i(t) dt between t=0 and t

3. The attempt at a solution
(3t^2)/2=6x10^-12 C. Is this right?

2. Jan 15, 2014

Staff: Mentor

Your relevant equation is okay, but it looks like you set up the integral incorrectly. What function did you integrate?

3. Jan 15, 2014

patep023

f(q)=i ?so integral of 3A which is (3t^2)/2 ?

4. Jan 15, 2014

Staff: Mentor

Nope. Your function is a constant. Dropping units for now, I(t) = 3. There's no "t" in the function to become a $t^2$ upon integrating.

5. Jan 15, 2014

patep023

ye I was just being stupid, ty for the help