- #1
rotiff
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Homework Statement
Maximum current:
I max = 4.62 * 10^-4 A
Time constant of circuit:
T = 3.9 seconds
Homework Equations
T= RC
The Attempt at a Solution
I'm trying to find the current after 1 time constant. Seems simple enough, the current changes by 63%. So (Imax)-(Imax * 0.63) or basically I max * 0.37
But the teacher just took I max * 0.63 ! I thought it CHANGES by 63% not simply 63% of the original value!
I looked it up and all websites agree that the current after 1 time constant will be 0.37 of it's maximum value, hence a change of 63%!
http://www.electronics-tutorials.ws/rc/rc_1.html
Has the teacher made a mistake? I have deeply confused myself over a simple thought. Please help.
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