Recent content by sugz

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?

Oh right! That makes sense! Thanks a lot, once again!

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...

Thank you very much! I understand this now!

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...

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...

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)?

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...

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...

my question is why is I2 out of the paper?

If you look at the 2nd picture, where it says (a), the second line after that!

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?

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?

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...

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...