What is Circuits: Definition and 1000 Discussions

Formula One, abbreviated to F1, is currently the highest class of open-wheeled auto racing defined by the Fédération Internationale de l'Automobile (FIA), motorsport's world governing body. The "formula" in the name refers to a set of rules to which all participants and vehicles must conform. The F1 World Championship season consists of a series of races, known as Grands Prix, usually held on purpose-built circuits, and in a few cases on closed city streets. The results of each race are combined to determine two annual championships, one for drivers (World Drivers' Championship), and one for constructors (World Constructors' Championship).This list is for the circuits that hosted World Championship races from 1950 until now. The terms "Formula One race" and "World Championship race" were not always synonymous throughout history – see Formula One#Distinction between Formula One and World Championship races for a detailed explanation.

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  1. W

    RLC Circuits - Q Factor and Amplitude

    Homework Statement Imagine you have two RLC circuits you are trying to scan for resonances. They have identical resonant frequencies, but circuit 1 has a very high Q-factor (Q1 >> 1), and circuit 2 has a very low Q-factor (Q2 < 1). Let's assume you are already on resonance and looking at V(out)...
  2. G

    Engineering Simulation of Circuits Without Kirchhoff's Laws?

    1. The problem statement, all variables, and given/known data I am currently drafting a proposal for a project in Computational Physics. I'm planning on creating a program that simulates circuits numerically instead of solving the system of equations. The purpose of my project is to observe the...
  3. E

    Checking my answer.... finding the power of a current and a voltage source

    Homework Statement The current source and voltage source in the circuit shown in the Figure below are connected in parallel so that they both have the same voltage, vs. The current source and voltage source are also connected in series so that they both have the same current, is. Suppose that...
  4. P

    Calculating Resistance in a Circuit using Kirchhoff's Laws

    Homework Statement 1) what is the total resistance of this circuit between points A and B? 2) if the horizontal resistor was replaced with an ammeter what would it read if a 6V battery was placed between points A and B? let R = 20 ohms Homework Equations The Attempt at a Solution had...
  5. P

    LCR series circuits and average power

    Homework Statement One type of tuning circuit used in radio receivers is a series LCR circuit. You like listening to a station1 that transmits 99.3 MHz in . The government wants to make 100.1 MHz available to station2. Assume that the transmitters of the two stations are equally powerful and...
  6. P

    Engineering How Do You Solve RCL Circuit Problems Using Kirchhoff's Loop Rule?

    Homework Statement I'm just really lost on this topic and honestly don't have too much of an idea. (a) Using Kirchoff's loop rule, find the differential equation satisfied by the charge q(t). (b) Verify that q(t) = q_max e^-(a/t) cos(ωt) satisfies the differential equation for particular...
  7. P

    Resistance and capacitance in LCR circuits

    Homework Statement The output voltage, V_(out) (t) ‡ q(t) /C, effectively measures the charge on the capacitor as a function of time, where q(t) is an exponentially damped simple-harmonic oscillation: a) Given that L = 0.05 mH, the square-wave frequency is 25kHz, and the ringing decays to 40%...
  8. M

    Engineering Calculating Vx in a Circuit with Superposition and Kirchoff's Laws

    Homework Statement Homework Equations current/voltage division V=IR Kirchoffs Laws The Attempt at a Solution and adding all Vx I get 9.818181V.[/B]
  9. M

    Engineering Electrical Engineering Circuits

    Homework Statement Homework Equations V=IR kirchoff's Voltage/current law The Attempt at a Solution Going off the answer i got correct, 65V / 138.1788Ohms (Req of total circuit) for a total current of .47A. I think this is where i messed up but don't know how to continue...
  10. L

    What is the current in these 3 circuits right after the switches are opened?

    Homework Statement What is the current through the resistor marked 'R' in all three circuits just after the switch is reopened after being closed for a long time? The Attempt at a Solution The explanation that we were given for (1) is that I = V/2R and (2) I = V/3R and (3) I = V/(R/2) but I...
  11. G

    Engineering DC circuit analysis: conceptual mistake?

    Homework Statement Homework Equations[/B] I have a circuit that consists on 3 components in parallel: a current source Ia, a resistor R and a capacitor C. Ia is directed upwards, while the currents through the capacitor and the resistor are both directed downwards. Select the correct option in...
  12. G

    Engineering Open-circuit voltage in Thévenin equivalent

    Homework Statement Determine the Thévenin equivalent of the following circuit with respect to terminals A-B Homework Equations $$U=RI$$ The sum of the currents in a node is zero. The sum of voltages in a mesh is zero. I'm always considering the currents in the resistors directed downwards...
  13. marsupial

    The validity of the interconnection of ideal sources

    Homework Statement Sorry in advance for such a basic question, just starting my first electrical engineering course. The question asks if the interconnection of ideal sources is valid. The next part of the question asks us to verify that the total power developed in the circuit equals the...
  14. S

    What is the best software for the analysis of chaos in electric circuits?

    What is the best software for the analysis of chaos in electric circuits.
  15. S

    I Does chaos exist in circuits with linear elements?

    I have heard that chaos exists in all dynamical systems.Does this mean that chaos exists in circuits with linear elements too?Which software is best for analyzing chaos in electric circuits?
  16. G

    Engineering Voltages and current in a circuit: incorrect signal?

    Homework Statement Consider the circuit in the figure and calculate V1, V2 and IA. Notice that the symbols V and A represent, respectively, an ideal voltmeter and an ideal ammeter. Homework Equations Ohm's Law $$V=RI$$ KVL The sum of the voltages of a mesh in a circuit equals zero. We...
  17. J

    Engineering Troubleshooting AC Circuits: Tips and Solutions for Common Issues

    Hey guys, I'm having trouble solving this particular circuit Thanks in advance. <Moved to Homework, no template completed>
  18. Domenico94

    Electric cars -- Does periodic coasting help efficiency?

    Hi. I'm a student of electrical engineering, and I've always been interested in the idea of electrical cars, so I came up with a question: let's suppose we want to have a normal trip with car, and then we're not interested in going so fast with it. When we are driving in this condition, it isn't...
  19. C

    Electric circuits -- Finding the V-I characteristics of a light bulb

    Homework Statement Homework EquationsThe Attempt at a Solution I know Ammeter and bulb goes in series and Voltmeters in parallel. But am I supposed to connect the voltmeter to the little arrow on the potential divider, or just across the bulb?
  20. S

    D-Flip-Flop Circuit: Understanding the Enable and Clock Input Functions

    So I have been watching his videos trying to get ready for second year engineering (electrical). However, I am very confused as to what exactly is going on when he is pressing the enable/pulse switch during the run-through at 14:45. He has the enable connected to a capacitor, and he calculates...
  21. EEristavi

    Engineering Electronic/Electric circuits and schemes & DIY projects

    Hello, I want something were I can find electric/electronic schemes and circuits to built by myself, starting from basics to complicated ones (with explanation, why and how it works). P.S. I'm also interested in books which involves other fields (eg. chemistry) and DIY projects
  22. C

    Understanding RLC Circuits: How Do I Calculate Currents for Each Component?

    I'm having trouble understanding RLC circuits. If I have a resistor, capacitor, and inductor connected in series and I'm GIVEN the current through the resistor, How do I find the currents through each component? Is it the current that was given for the resistor (since they're in series), or do I...
  23. prakhargupta3301

    Will there be a difference between the readings of V1 and V2

    I= Current flowing V1= Voltmeter 1 V2= Voltmeter 2 My question is that if there would be any difference between the readings of V1 and V2? We know that: By Ohm's law: V= I.R also: Combined resistance of R1 and R2 will be: 1/RCombined Resistance of R1 and R2= 1/R1+1/R2 The reading in V2...
  24. S

    What gauge wire to use? noob circuits

    2 sets of 6x LED strips, each 12v 8.1a 97.2W, powered by a single cv 240W PSU, in parallel. The 2 sets are split at the PSU end, each set getting 120W separately. Schematic below, What I don't know is what gauge wire to use at points A and B? Can you please explain what should be used and why...
  25. Vectronix

    Lightning striking electric circuits

    Why does lightning seem to hit objects with free electric currents inside (like computers or cell phones) more than "neutral" objects?
  26. T

    Capacitors in earthed circuits

    Homework Statement For the curcuit shown in figure,which of the following statement is true? A)with S1 closed, V1=15V, V2=20V B)with S3 closed, V1=V2=25V C)with S1 and S2 closed, V1=V2=0 D)with S1 and S3 closed, V1=30V, V2=20V Homework Equations ▪Q=CV, where Q and V are the charge and...
  27. T

    Time varying resistance in circuits

    Homework Statement A battery of 10 volts is connected to a resistance of 20 ohms through a variable resistance R.The amount of charge which has passed through the circuit in 4 minutes,if the variable resistance R is increased at the rate of 5ohms per minute is: A)120 C B)120ln2 C C)120/ln2 C...
  28. W

    How would you solve the following cuircut problem?

    Homework Statement You are tasked with designing an electrical circuit with a motor, a battery, and several 1ohm and 2ohm resistors. The motor is designed to run at a current of 20A and a voltage of 10V, but your battery supplies 15 V. The motor can then lift a 4kg mass 2.25 meters in...
  29. J

    MATLAB Books to read for Matlab, C++, and Circuits?

    Hi I am an undergraduate EE student into my 3-4th year. I feel like my fundamentals are not so good at times and I want to improve. I want some recommendations on what books to read to really help improve my fundamentals. I really don't like the textbooks we are reading. They are just too broad...
  30. unseeingdog

    Final charge on capacitor for an RC circuit

    Homework Statement Homework Equations ##q = CE(1 - e^{-t/RC})##The Attempt at a Solution I assumed that, since the problem specifies that sufficient time has passed, it meant to say that enough time passed. thus making the exponential term in the equation go down to 0, and the charge in the...
  31. Asmaa Mohammad

    The voltage across an AC source and a resistance in series

    Homework Statement In the circuit below, the RMS of the AC source is 100V, the inductive reactance is 50 ohm, the capacitive reactance is 200 ohm, the resistance is 40 ohm and the current flows in the circuit is 0.644 A. Determine the reading of the voltmeter. Homework EquationsThe Attempt...
  32. I

    Charge flow in simple circuits

    Homework Statement The Attempt at a Solution Top left: No charge flowing through circuit b/c switch is open, not closed. Top right: No charge flowing through circuit b/c circuit does not connect positive and negative terminals Bottom left: Charge flows through circuit b/c closed loop between...
  33. wolram

    Help with finding vintage valve amplifier circuits (amplifiers for a rock band)

    Can anyone help please, I have been searching for vintage valve amplifier circuit diagrams and components. I need help in finding valves, transformers, and diagrams. I intend to build amplifiers for a rock band so i would like to build one with a 3KW output if that is feasible. Thanks for any...
  34. Louis Aguilar

    What is causing error code 16492 in PSpice?

    Homework Statement Run a transient simulation and plot the three outputs, Vo(t), on the same plot. Use the following settings: 1. Set the Run Time (or Stop Time) so that you plot 3 cycles of Vo(t). 2. Set the Maximum Step Size so that you get at least 100 points per period for Vo(t). 3. Set...
  35. Vanessa Avila

    (LC Circuit) Finding cap charge after connecting to inductor

    Homework Statement A capacitor with a capacitance of C = 5.95×10−5 F is charged by connecting it to a 12.0 −V battery. The capacitor is then disconnected from the battery and connected across an inductor with an inductance of L = 1.50 H . What is the charge on the capacitor after a time...
  36. A

    Why does this bulb get brighter after the switch is closed

    Homework Statement Homework Equations None The Attempt at a Solution The answer is B, bulb B will be brighter than before. My thought was that initially, the current gets split so that 2/3 I0 goes to the branch with 2 bulbs, since it has twice the resistance of the first branch, and that...
  37. Cocoleia

    Working with phasors (Circuits, such as complex power)

    Homework Statement I am going over examples in my textbook and I came across this: I don't understand how they converted 18.265 at angle of 39.9 to 14.02+j11.71 Homework Equations I know how to convert from the imaginary numbers into the angle form, usually I use: Is there another equation...
  38. L

    Potential difference between two points

    Homework Statement Question from OCR A Level Physics Exam 2014 (i) and (ii) = definitions (iii) = explanation (iv) = P.d. at 6Ohm Resistor = 0.48V (v) Suggest why the p.d. between X and Z is zeroHomework Equations I don't think there are any The Attempt at a Solution I couldn't understand...
  39. A

    Why do the capacitors in this circuit have the same voltage?

    Homework Statement Homework Equations C = Q/V The Attempt at a Solution I understand that capacitors in parallel have the same voltage, but wouldn't they be in series after the switch is flipped, since no current goes to the left most portion of the circuit.
  40. A

    What happens to a coil of wire as current is increased?

    Homework Statement Homework Equations L = (N * F_b) / I (where F_b is the magnetic flux) emf = -L * (dI/dt) The Attempt at a Solution I originally thought that the inductance would decrease since it is inversely proportional to current. But, looking at the equation for emf, that would...
  41. A

    Simple inductance question: Finding steady state current

    Homework Statement Homework Equations I = E / R_total The Attempt at a Solution I mostly just want to clarify that my thinking is correct. The solution for this problem shows that the current is split evenly between the two paths. Is that because we're assuming that the inductor has no...
  42. D

    Dealing with two circuits connected by adjacent inductors

    Homework Statement Here is the problem: Homework Equations Typical RL circuit equations. The Attempt at a Solution My main question with this problem is figuring out what to do with the third resistor, the one on the right. Initially, I thought of using RL circuit equations with the left...
  43. Arman777

    I RC circuits multpile R's and C's

    I have a circuit which it looks like this. We need to write the general RC equation.Can I reduce this circuit to like ##R_{eq}## and ##C_{eq}## then solve it ? This is not a homework question.Just need theoretical approach
  44. J

    Potential Divider Circuits (resistor + LED)

    Homework Statement Attached to this thread is the question and mark scheme. Homework EquationsThe Attempt at a Solution I got most of the question right but I have no idea about the explanation part of why to include the 100 ohm resistor which is required for the higher level. It says in the...
  45. victor94

    I Help in understanding a quantum circuit

    I'm in a proyect to simulate quantum circuits in robots like in this paper ( http://ieeexplore.ieee.org/document/4215941/ ) ,the first thing that i need to do is to simulated the circuit that is in that paper: But I'm having trouble understanding how the hadamard gate affects the "C"...
  46. J

    Energy and Voltage of Capacitor Circuits

    Homework Statement A capacitor (A) of capacitance 4.0uF is charged to a potential difference of 20V. An uncharged capacior (B) is connected in parallel to capacitor A. What is: (a) the initial energy stored on capacitor A (b) the p.d. across A after B has been connected (c) the final energy...
  47. davidge

    I Quantum-Mechanical treatment of circuits

    Hi everyone. I have to say I never get satisfied with introductory explanations of how electric phenomena occurs. Specifically, I would like to know how Quantum Mechanics explain the raise of a electric current and especially what makes a resistor being (maybe) the most dissipative element in a...
  48. Bassa

    Diode - Resistor Combination

    Helo, I am in an electronic course and we just started studying diodes. I am stuck on the following problem: Place a 100 ohm resistance in series with a diode, and plot current versus voltage across the series combination. I am also given the following values for the diode: n = 1, Is =...
  49. J

    Finding Optimal Fixed Resistor for Potential Divider Circuit

    Homework Statement Consider a potential divider circuit with an LDR and a fixed resistor. The circuit is powered by a battery which has an emf of 45V with negligible internal resistance. (a) Describe and sketch a circuit that could use a voltmeter or an ammeter to act as a light meter such...
  50. R

    How can I enhance RLD circuits with an LED for period doubling?

    First a little background. In my lab physics class we performed a lab to determine the Feigenbaum constant. I decided to do my research project on period doubling in non-linear circuits. I started thinking about the RLD circuit and how I could make it more interesting by adding different...
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