Recent content by sugz

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    Engineering Initial and final values for second order circuits

    Hi, I know this is a little late but I have been attempting to figure this out myself but had no success. In part (b) of that question, it is indicated that vR=vC+10. However, shouldn't vR=0 since all of the 2A goes to the short circuit (capacitor current)? This would make dvR/dt=0?
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    Engineering Initial and final values for second order circuits

    Oh right! That makes sense! Thanks a lot, once again!
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    Engineering Initial and final values for second order circuits

    I am attempting to solve another problem, which carries over the same concepts. The question I have is related to part (a) where the solution suggests "Since it is in series with the +10V source, together they represent a direct short at t=0+. This means that the entire 2A from the current...
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    Engineering Initial and final values for second order circuits

    Thank you very much! I understand this now!
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    Engineering Initial and final values for second order circuits

    Dear gneill, that was a very clear explanation. From what I understand, the "-" lead is connected to the positive side of the voltage, which would make that point +20V. The "+" lead is connected to the single node, which is at a lower voltage. Therefore, the potential of this node with respect...
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    Engineering Initial and final values for second order circuits

    Homework Statement I am attempting to understand this example shown below: Homework Equations During stead state DC, the capacitor is an open circuit and the inductor is short circuited. The Attempt at a Solution [/B] The questions I have are really related to the concepts as I don't...
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    Find the voltage gain, input and output resistance amplifier

    Is the input and output resistance being asked in part (a) different from the input and output resistance of the op amp itself (i.e. 2 MegaOhms and 75 Ohms, respectively)?
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    Find the voltage gain, input and output resistance amplifier

    The input and output resistance of the op amp itself is 2 megaohms and 75 ohms, respectively. The gain of the op amp 0.5x10^6. This is the second week of this course, where we haven't learned much of this. I am confused if I am missing something. I am not sure I quite follow what you mean when...
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    Find the voltage gain, input and output resistance amplifier

    I am having a difficult time solving the question in Step 2 of the attachment. The question is "Use the equivalent-circuit model of the uA 741 to find: The voltage gain Av=vo/v1, the input resistance R1, and the output resistance Ro of the amplifier circuit. Attempt at solution: I used the...
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    Direction of Magnetic Field of a Parallel Conducting Wire

    my question is why is I2 out of the paper?
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    Direction of Magnetic Field of a Parallel Conducting Wire

    If you look at the 2nd picture, where it says (a), the second line after that!
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    Direction of Magnetic Field of a Parallel Conducting Wire

    I meant the current not the magnetic field, sorry it was a mistake! Why is I2 in (a) out of the page if it's in the +j direction?
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    Direction of Magnetic Field of a Parallel Conducting Wire

    Yeah I understand that it can be into or out of the page, but for the answer to (a) they said I2=2i1 (out of the page), why is that?
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    Direction of Magnetic Field of a Parallel Conducting Wire

    Homework Statement Two long, straight, parallel wires carry currents that are directed perpendicular to the page as shown in Figure P30.9. Wire 1 carries a current I1 into the page (in the negative z direction) and passesthrough the x-axis at x a. Wire 2 passes through the x-axis at x 5 22a and...
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    Magnetic field at the center of a square conducting loop

    Homework Statement Problem and solution attached Homework Equations B = [4uI/(4pi)]sin(theta1-theta2] The Attempt at a Solution I understand fully how to do it except determining the value of theta1 and theta2. The solution says theta1 is 45(deg) and theta2 is -45(deg). How did they get those...
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