Electrical Definition and 1000 Threads

Homework Statement Two charged plate hold a charge of 3 coulombs with the upper plate being positively charged and the lower plate being negatively charged. They have a pd of 6 volts. There is a spacing of 20 cm between them. A positive charge q with a charge 0.4 coulomb is located at midpoint...

Hey, I am having problems with this. I need help with these 2 circuits I am basically lost and not sure how to start. I need to find voltage, current and potency on each resistance help would be much appreciated, thank you http://imgur.com/trm1On0 http://imgur.com/a/KD3zr

I'm a first year electrical engineering student and in my General Chemistry class, every other week, we're required to write a paragraph about how each weeks material relates to your future career. As I am in electrical engineering, I don't see much relation to any topic. This week is...

What is electrical charge? is it a measure of the abundance of electrons within a system? Current is defined as the amount of charge flowing between any two points in a system over a given period of time, correct? but what is elctrical charge if possible to define it better/further. I am...

Homework Statement Homework Equations Node Voltage Method V=IR The Attempt at a Solution KCL at Node 1: KCL at Node 2: i is the current moving towards "a" I've simplified the two equations down but the problem I run into is that normally I'm able to write a third equation to define i0...

Homework Statement Prove that the total energy of an electron orbiting a hydrogen nucleus is Etotal = -e^2/ 8ε0 π r where e is the magnitude of charge of an electron and r is the orbital radius. Homework Equations Knowledge The Attempt at a Solution Here is my attempt: For KE, mv^2/r =...

I graduated with a B.E.E. last year, took some time off now i am planning to pursue a masters degree in engineering. i did graduate with a decent grade but i did not enjoy studying electrical engineering at all. my aptitude is more towards management and arts. are there any masters options in...

my research is about "The effectiveness of different basic substances on the Eletrical conductivity" and i need " significance of the study " 1) who are the beneficiaries and what benefits will they get ?Please help I am a high school student struggling with my research

The electric field inside an uncharged metal sphere is initially zero. If the sphere is the positively charged, the field at the center of the sphere will be...?

I know that robotics is a multidisciplinary field, requiring knowledge from many different fields of study. But I would like to know what would be the better path for a engineering seeking to work with robotics: it's mechanical or electrical engineering? I'm a student of MechE myself, and I have...

Hi, I am currently distance learning an electrical engineering course from a marine college. I have study material and past exam papers. Unfortunately the college won't mark my practice exam papers so I don´t know if I am getting the correct results. Does anyone know of any online...

Hi, I am a rising junior in high school. I have always wanted to be an engineer. I eventually found out that I loved electrical engineering, ever since then my career path was focused on engineering. I discovered that I love physics as well. Every time I learn about a new physics topic I get...

I am currently a computer engineering student , in my second year to be precise. I was just wondering if I could continue my postgraduate studies in physics or anything similar , and will I be better off with a degree in electrical engineering ?. like is electrical engineering closer to physics ?.

Hello, I am interested in majoring in electrical engineering. I enjoy learning about electricity and magnetism and I also wish to learn more about solar power. Throughout my life I have never taken any Calculus or anything above (just pretty much stayed in the Algebra realm). For me, concepts...

Hi. I am an electrical engineering student in my final year. I want to write a research or review paper this year before completing my degree. I haven't written any paper before. I don't know where to start. Will someone please guide me? In addition to that I haven't selected any topics so I...

Hello, I am looking for an "easy" but cool electrical engineering project. I've tried to make a mini tesla coil, but I keep messing up the coil part itself, so I am taking a step back from it for a while. Are there any relatively easy (I am beginning) electrical projects that you have heard of...

This fall I'm going to the university of electrical engineering and I am looking for some good physics and math books concerning the following topics: Physics -Classical Mechanics ( level above Calculus 2) - Electricity and Magnetism ( level above calculus 2) -Electrical cirtcuits (specially...

i am finding it difficult to get insight about modelling of non linear system (electrical). my queries are, consider the system is DC DC converter... 1) I read that to study the dynamics of the system we linearise the non-linear system...why do we want to linearise it?... 2)can some one please...

what is Ring Main Unit design in electrical panels ?

Homework Statement Two identical light bulbs are connected to the ends of the battery. In the first case they are connected in series and in the second they are connected in parallel mode. What is the ratio of the electrical power of light bulbs connected as mentioned? Homework Equations...

As per the Gauss Law , Net Flux Electric Field through a closed Surface (Gaussian Surface) is zero if no charge is enclosed. As per the definition of the Electrical Flux = Electrical Field Intensity dot product Area Vector i.e. Closed Integral of E.S If Electrical Flux is zero then as per the...

Homework Statement Is there a difference between electric, electrical and electrostatic force? Homework EquationsThe Attempt at a Solution I used them interchageably. Is it incorrect?

Do I need to know related rates for electrical engineering?

Hi everyone. I'm currently just beginning my studying for my HAM license, and had couple of questions... 1. when looking at different items, a battery, a lightbulb, my Nintendo DS, etc, the information about the electronic is different. For example, this battery I have here shows that it's...

It's just that I've never properly sorted this confusion of mind, so i would like to sort it out so it 2 different capacitors are in series with a resistor: (let's say 0.15F, 0.45F, 150M ohm) 1. both current and voltage drops exponentially 2. capacitance on capacitors remain same over time? 2...

Homework Statement Hi, I am studying gauss's law via this book below.[/B] http://faculty.polytechnic.org/cfletcher/Phys%20With%20Calc_Vol_2_web_pdfs_2010/i-Ch14-PCALC--GAUSS'S%20LAW.pdf On page 8, and 9, the book describes the shell method of finding the volume of the sphere and then using...

Homework Statement Calculate the solar array power capacity required at the start of the mission Mission duration is 10 years Distance from the Sun at end of mission is 4.8x[10][/8] km The power requirement for the spacecraft at the end of life is 510 W Solar array degradation over mission...

Why does the potential energy of a system of two charged particles decrease as the distance between them increases? It seems that the PE should increase, as in U=mgh; as h increases, the PE increases. Why does this not occur in electrical potential energy, and in the gravitational potential...

Hello, What to do to get good job after Electrical and electronics Engineer?

Homework Statement Hi everybody! I would like to clear up some doubts I have about my electromagnetism homework: A positive point charge ##q## is placed in the center of an ideal conducting electrically neutral spherical shell, as shown in the attached picture. a) Calculate the electrical...

hi, I'm an electrical engineering student and have studied c programming. Everything I was doing however was just to familiarize myself with c and the language, therefore just executable programs that could create a database, or make an array or data to programs that aided me like a resistor...

Homework Statement FIGURE 3 shows part of an electrical supply system. Draw the impedance diagrams reducing to a single impedance. Calculate the fault MVA levels in each unit for a fault on the left 3.3 kV bus with the bus section switch B open and A closed. Use a base MVA of 10 and show...

How can the term "terminal" be defined Is't just "the physical end of the component " Or there is a more rigorous definition

Hi! I'm working on a project where we are building a windturbine from the bottom up. Myself and a colleague are designing a double stator axial flux generator for our turbine. Our requirements are that we deliver about 10 W at nominal rotation speed. It's a direct axis driven generator...

I completed a solar energy lab, where we looked at power flows, which were represented through different parts of a circuit measured with 3 separate ammeters. We used four different modes and varied the irradiance and load. only charging = energy from solar panel to circuit without battery...

Cant seem to find a kv/mm for waterglass/sodium silicate. I was thinking of using it as an electrical insulator for vacuum feedthroughs, expecting an easy seal as I hear it expands when heat cured, therefore pushing against the chamber wall and the wires to prevent leaks and also seal by its...

I just got accepted to an electrical and computer engineering course (ECE) and I was wondering if its possible with this degree to get a job in electronic engineering. It seems that the syllabus covers more of electrical engineering than computer, but I'd like to get a job designing hardware...

Hello Im looking to build a very small electrical resistance heater. It should produce no more than 1 to 3 degrees of heat. This is for a personal project of mine. I need to know what types of materials I need to use. Id like the device to be both battery powered and plug in. Can anyone...

Hey guys, I know I still have a tread unanswered but I got a project in which I have to include some physical theory about the working of motors. I know P=V*I and also P=T*W where V is voltage, I is current, P is power, T is torque and W is angular speed. My question is, can I say V*I=T*W?. I...

Homework Statement An alpha particle (charge equals +2e) is sent at high speed toward a gold nucleus (charge equals +79e). What is the electrical force acting on the alpha particle when it is (2.0 x 10-14) m from the gold nucleus? Homework Equations I tried using Coulomb's law, which is E =...

Homework Statement Assume that you are employed by a company that manufactures hydraulic servomechanisms. You have been asked to recommend an electrical method of providing position feedback rather than the mechanical method used at present (pictured below). The demand signal has been chosen...

Please don't hate if this is a stupid question, I am a freshmen in high school so I don't know this stuff. What I am really talking about is how all atoms have some impurity in them which is why friction happens, but is there a way to create one with no impurity?

Help. I am having a problem choosing a topic for my math research project. Anybody have any ideas they'd like to share ?

Hi if I had the ratio of 4:1 and the frequency of 10Khz how would I go about finding the time?

Does electrical arc with the same power but different voltage and current have same temperature? When electrical arc is form, it is estimate that the temperature is about 3000K Does temperature depend on voltage or current alone? Or does it depend on power(P=VA)? I think it is power, because...

My goal is to program a FDM simulation of a transformer. So, we have the coupled inductor model to start with ... However, if L1 = 1, L2 = 9, and coupling is perfect then M = sqrt(1*9) = 3 and L1 - M = -2. So, this seems problematical to me. Also, if I try to simulate this model using SPICE...

Homework Statement Given a coil with N turns, a radius of r, a resistance of R', and an induced current i'(t) running through the coil, determine the totale energy converted to heat in the coil for t>=0.EDIT: The circuit on figure 4 consists of a resistance R and a capacitor with capacitance...

https://www.washingtonpost.com/graphics/local/metro-lenfant-incident/?hpid=hp_no-name_graphic-story-b%3Ahomepage%2Fstory I am impressed by this article in today's Washington Post. In my memory, this is the most notable case since the NASA Challenger O-ring disaster that attempted to make the...

Here’s an interesting bit of research regarding how bacteria communicate through ion channels. It talks about biofilms which I understand as being thin films of bacteria that colonize the surface of teeth for example: The bacteria then communicate using what sounds like a 2 dimensional EM wave...

Hi, I'm currently a freshman electrical engineering student in a university and I'm having a dilemma if I am to transfer to physics or no. First of all, I chose my current program because of our electronics elective class in high school. I enjoyed the experiments back then and the projects as...