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 Integration of current over time

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T O P I C    R E V I E W
Hassaan Posted - 04/23/2014 : 08:37:13 AM
Hi Folks

I just joined the forum but have been using Origin for last one year mainly for plotting of data.
This time I have some data of electric current over time. Current is varying with respect to time (interval of 10 msec). I 300 samples of current i.e. current is recorded for 3 seconds. Current looks like an exponentially decaying current. Similarly I have the voltage samples over the same amount of time.

I want to integrate the current and in fact I have integrated and it gives me an almost straight line with little curvature. I do not know how to interpret the y-axis value. x-axis is time. Can somebody explain it?
Thanks for reading my problem.
Images are given below for both current and its integral.




Hassaan
1   L A T E S T    R E P L I E S    (Newest First)
Drbobshepherd Posted - 04/23/2014 : 09:48:27 AM
Hassaan,

Current I is the amount of charge dQ transferred per unit time dt. In other words, I = dQ/dt. Your integral is the cummulative charge Q transferred from time = 0 to time = t. Label your y-axis "Charge (millicoulombs)".

DrBob

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