Kirchhoff Definition and 64 Threads

  1. A

    The Physical Significance of the Second Term in Kirchhoff's Current Law

    Hi Everyone, I'm told that the following formula represents Kirchhoff's current law g_1 E_{1 n}+\varepsilon_1 \frac{\partial E_{1 n}}{\partial t}=g_2 E_{2 n}+\varepsilon_2 \frac{\partial E_{2 n}}{\partial t} where the first term on each side is Ohm's law and the conductive current and...
  2. S

    Accuracy of Kirchhoff diffraction theory

    Hi guys, My research project involves a paraboloidal telescope with a primary diameter of 25 meters, and a focal length of 10 meters. My goal is to come up with the mathematics and numerics to determine the surface profile error of the primary mirror. We will take a point source of 2mm...
  3. K

    What is the correct way to apply Kirchhoff's rules to this circuit?

    http://img17.imageshack.us/img17/201/73448266.jpg let's suppose that we know all resistors and voltages by applying kirchhof rules we have V1 - i*R1 - i*R2 -i2*R3 = 0 V1 - i*R1 - i*R2 - i1*R4 - V2 = 0 -V2 + i2*R3 - i1*R4 = 0 we know V1,V2,V3 R1,R2,R3 and we can find the currents...
  4. fluidistic

    Understanding Kirchhoff's Laws: Solving Circuits with Multiple Voltage Sources

    Homework Statement See picture for the problem. 1)Calculate the work done to move a charge a= 0.7 x 10 ^(-3)C from A to B, passing by R2. 2)The power dissipated in R3. 3)The current passing by R1. 2. Given equations R1=R3=100 omhs, R2=200 ohms, R4=300 omhs. e1=e3= 5 V, e2=10 V and...
  5. E

    Kirchhoff's Law Derived from Faraday's Induction - EMROZ

    Please see the attachment. There I have derived Kirchhoff's Voltage law from Faraday's Induction law. Reply me if I have done something wrong and also notify me if this proof has been made somewhere else. Thanking you, EMROZ
  6. D

    Solving Kirchhoff's Problem: Finding Current in a Directed Graph

    Homework Statement I have been given the above information and asked to find the current in the edge ac. s is the sink, t is the source. Homework Equations Kirchoff's First Law, current in = current out. Kirchoff's Second Law, the sum of resistance.current for all vertices in a cycle = 0. The...
  7. S

    Is This the Correct Solution for Kirchhoff's Loop Problem?

    Homework Statement We are to find I1, I2 and I3 in the diagram. Homework Equations These are the three equations I got. I need to know if they're correct. x=I1 y=I2 z=I3 12y-24+35x=0 35x+34z-18=0 x=y+z The Attempt at a Solution Values I got on solving: I1=0.508 I2=0.511...
  8. N

    Electrodynamics: AC-circuits and Kirchhoff

    Homework Statement Hi all. Please take a look at the attached circuit. I want to find the current through the capacitor, and of course I will use Kirchhoffs laws for AC-current. In this case, ε(t) = ε_0*cos(ωt). My question is: If this was an DC-circuit, I would define e.g...
  9. G

    Simple Kirchhoff Loop problem with inductor

    Homework Statement Just refer to the figure. The part shown is a part of a big circuit which you and anybody else shouldn't worry about.Homework Equations The Attempt at a Solution I considered the battery terminals to be at 10 and 0V respectively. So the farther end of the resistor should be...
  10. S

    Kirchhoff and Potentials question.

    Excuse me but, this is a rough translaton from a Portuguese homework. Also, excuse me for my lack of knowledge in some physics, I do a programming course and one of the teachers said we had to know about this. Homework Statement http://img181.imageshack.us/img181/7084/87202322av0.jpg...
  11. G

    How can I solve a multiloop circuit using Kirchhoff's laws?

    Homework Statement What is the current in I(1), I(2), and I(3)? Homework Equations At nodes \sumI = 0 Loops \sumV = 0 The Attempt at a Solution Ok, I'm definitely new to this multiloop stuff so I'm not quite sure what the best way to work these problems is. Here's what i have for...
  12. C

    Kirchhoff loop rule and Ohm's Law

    Homework Statement To understand the behavior of the current and voltage in a simple R-C circuit A capacitor with capacitance C is initially charged with charge q0. At time t=0 a resistor with resistance R is connected across the capacitor PART A Use the Kirchhoff loop rule and Ohm's...
  13. A

    Determining Current Through 6 & 9 with Maxwell & Kirchhoff

    (1) USE MAXWELL CURRRNT CIRCULATION METHOD TO DETERMINE THE CURRENT THROUGH 6 AND 9. (2) USE KIRCHHOFFS LAW ALSO TO DETERMINE THE CURRENT THROUGH 6 AND 9. Thanks.
  14. K

    Kirchhoff Circuit: Current, Resistors, Voltage

    Circuit Current I have the circuit below (also attached as an image): Note: ^^^^ & <<<< = resistors [-]=power supply ...=just space (-) & (+) indicates + & - side of battery A,B represent the junctions |-----^^^^------A-----^^^^------| |......|......| <......<......(-)...
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