Hello,
The circuit attached below is from Richard Dorfs Intro to Electric Circuits book. The switch is shut for a long time and opened at t=0.
The question asks to find the current i(t) across R11, which they use nodal analysis and find it to be 66.67 - 16.666 e
micro Amps.
However when i do it from superposition 66.67 micro Amps is due to the 8 v source and + 16.666 e
source due to the capacitor
My question is that if we use superposition instead, shouldnt the current due to the 8 v source and the capacitor be added since both send current towards R11 in the same direction?
Thus basicall I would just like to know why the current due to the capacitor will be subtracted?
Thank you in advance
P.S Unfortunately i dont have the book in question, although the answer is correct.
The circuit attached below is from Richard Dorfs Intro to Electric Circuits book. The switch is shut for a long time and opened at t=0.
The question asks to find the current i(t) across R11, which they use nodal analysis and find it to be 66.67 - 16.666 e
However when i do it from superposition 66.67 micro Amps is due to the 8 v source and + 16.666 e
My question is that if we use superposition instead, shouldnt the current due to the 8 v source and the capacitor be added since both send current towards R11 in the same direction?
Thus basicall I would just like to know why the current due to the capacitor will be subtracted?
Thank you in advance
P.S Unfortunately i dont have the book in question, although the answer is correct.
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