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I'm confused because we still consider resistors that are on the branches of the +/- terminals of the open circuit voltage.

Thanks!

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- Thread starter Naakicibi
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In summary: I would call it i_short. For t=inf I get i(t)=0.01625A so assuming one of us is simply off by a factor of 10 it looks like your number is correct.i_short would be a good name for it. i_sc would be more accurate but might be confusing.

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I'm confused because we still consider resistors that are on the branches of the +/- terminals of the open circuit voltage.

Thanks!

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axmls said:

Thank you very much, that made it very clear. Maybe you could help me with a similar situation; what should I do when given a voltage source and a resistor in parallel with a short circuit (this time I'm not considering a thevenin equivalent)

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axmls said:

http://postimg.org/image/69pyh7uun/

Thanks for your help, I have linked the circuit I am analyzing, and at this point I'm just unsure how to deal with the short circuit all together... I'm asked to find i(0), so I used mesh-current analysis of the middle mesh (when t<0) to get a short circuit current of .1 A, which is the steady state current before t=0. Then when t > 0 and the short circuit is removed, I get i_sc = .1625 A. These values don't seem right because later I'm asked to compute when i = 0, which never occurs with my transient function derived from these currents.

For t<0, does all of the current produced from the voltage and current sources only flow through the short circuit branch, and thus cancel out the branch with the 30 ohm resistor?

thanks again

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Naakicibi said:For t<0, does all of the current produced from the voltage and current sources only flow through the short circuit branch, and thus cancel out the branch with the 30 ohm resistor?

no current will still flow through the 30 ohm resistor.

when you say i_sc, do you mean i(t)?

also unless you are finding steady state current I(t) should be a function of t because of the inductor.

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for t=inf I get i(t)=0.01625A so assuming one of us is simply off by a factor of 10 it looks like your number is correct.donpacino said:no current will still flow through the 30 ohm resistor.

when you say i_sc, do you mean i(t)?

also unless you are finding steady state current I(t) should be a function of t because of the inductor.

I would not call it I_sc, as sc often stands for short circuit.

Finding R_{thev} helps determine the equivalent resistance of a circuit, which is an important parameter in understanding how the current flows in a parallel resistor and short circuit circuit.

R_{thev} is calculated by taking the reciprocal of the sum of the reciprocals of all the resistances in the circuit. In a parallel circuit, this means adding the inverse of each resistance and then taking the inverse of the total.

When a short circuit occurs in a parallel resistor circuit, the equivalent resistance R_{thev} becomes 0, as the short circuit provides a path of no resistance for the current to flow.

R_{thev} helps in understanding the total resistance of a circuit and how it affects the current. It also helps in calculating the total power dissipated in the circuit.

No, R_{thev} can never be greater than the largest resistance in a parallel resistor and short circuit circuit. This is because, in a parallel circuit, the total resistance is always less than the smallest individual resistance.

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