Hi everyone,
Rather simple question:
The current entering the positive terminal of a device is i(t) = 3e^(-2t) A and the voltage across the device is v(t) = 5di/dt V.
Find the charge delivered to the device between t = 0 and t = 2 s.
since i = dq/dt, q = integral of i with respect to t
I'll have my integral sign be [
So q = [ i dt = [ 3e^(-2t) dt = (-3/2)e^(-2t) evaluated from 0 to 2:
-3/2e^(-4) - (-3/2) = 1.47 C
Answer in the back of the book = 1.297 C
Who's wrong?
Thanks in advance.
Rather simple question:
The current entering the positive terminal of a device is i(t) = 3e^(-2t) A and the voltage across the device is v(t) = 5di/dt V.
Find the charge delivered to the device between t = 0 and t = 2 s.
since i = dq/dt, q = integral of i with respect to t
I'll have my integral sign be [
So q = [ i dt = [ 3e^(-2t) dt = (-3/2)e^(-2t) evaluated from 0 to 2:
-3/2e^(-4) - (-3/2) = 1.47 C
Answer in the back of the book = 1.297 C
Who's wrong?
Thanks in advance.