I apologize using English fluently because I am not an Enlgish speaker.
When I tried to solve this problem, I used current divider rule.
So, $$i_o(t) = \frac{3}{3+5}*4e^{-2t} = 1.5*e^{-2t} A$$
However, This was wrong.
The answer is $$ 1.5*e^{-2t} + 0.5 A$$
If I use $$V_O = L*\frac{di}{dt}$$...
I am new here and I am not going to say I have any formal schooling in physics or electrical engineering. I have been in the automotive field for almost 40 years.
What I am getting at is, myself and my research partner came across a very unusual circuit about 4 years ago. We spent about 3 years...
Homework Statement
a) State the boundary conditions for the electric field strength E and electric flux density D at a planar interface separating two media with dielectric constants ε1 and ε2.
b) A parallel plate capacitor with a plate separation d is filled with two layers of different...
What are the ideal conditions in which circuit analysis or analysis of an electrical system is done?I know that the air friction,friction between materials is ignored in ideal systems, such as for ohms law applications.What else is ignored in analysis of ideal electrical systems?
Homework Statement
2. Homework Equations
[/B]
Consider the following circuit where:
$$R_A=330 k\Omega$$
$$R_B=220 k\Omega$$
$$C= 2.2 nF $$
$$v_1(t)=6u(t) V$$
$$ i_2(t)=-10u(t-t_2) \mu A$$
$$t_2 = 12 ms $$
All the currents go clockwise (with the obvious exception of the current source)...
In the paper http://physics.unipune.ernet.in/~phyed/26.2/File5.pdf, the author solves the LC-circuit using Euler-Lagrange equation. She assumes that the Lagrangian function for the circuit is $$L=T-V$$ where
$$T=L\dot q^2/2$$ is the kinetic energy part $$V=q^2 / 2C$$ is the potential energy.She...
Homework Statement
There is a figure, I'll try my best to draw/describe.
1. All three resisters are in parallel
___R____
!___R____!
!___R____ !
2. 2 resisters are parallel and one in series, after the parallel (ignore the dots)
___R___
............... _____R___
!___R___ ...
Homework Statement
The problem from the textbook is:
Is it possible to connect resistors together in a way that cannot be reduced to some combination of series and parallel combinations?
Homework Equations
V = IR
kirchhoff's current law
kirchhoff's loop law
The Attempt at a Solution
I am...
Homework Statement
The figure represents a part of a circuit, and the potential difference between the f and d is 12Volts, depending on the information shown in the figure, determine:
1-the reading of the Ammeter
2-the value of (Vb)₃
3- the potential difference between (c , b)
Homework...
Homework Statement
The Question wants to find the Voltage Across The Current Source 2A and 5A
Homework Equations
KVL
KCL
Ohm's Law
The Attempt at a Solution
I tried to Using KVL and KCL for all Closed paths and node but I just Couldn't Figure how to relate them to find the voltage across the...
Homework Statement
2. Consider an electric circuit consisting of an inductor with inductance L Henrys, a resistor with resistance R Ohms and a capacitor with capacitance C Farads, connected in series with a voltage source of V Volts. The charge q(t) Coulombs on the capacitor at time t ≥ 0...
[Note: Thread has been moved to the homework forums by a mentor]
This is the Given problem
This is my solution part 1
- What I did here is I series the R3 and R4 (R3 + R4), and I parallel the R34 to R5 (most of the calculation are from the calculator)
This is my solution part 2
The...
Hello Everyone!
So, I need to calculate the voltage in the capacitor, let's call it Vc(t).
For t=0- I know that there is no current in the capacitor. Did some calculations and I've found that Vc(0)=6v.
Now i need to know Vc(infinite)
But when the switch key is opened and the time goes to...
Hi everyone. In electrical engineering, when you study control theory, you're taught that electrical circuits can be used to simulate the behaviour of complex systems. What I don't understand is, what are the limitation of this sistem, and why it can't be obviouslly used in a general way to...
Homework Statement
Find the equivalent resistance between AB.
Homework Equations
The Attempt at a Solution
I could not find any Wheatstone bridge or series parallel combination. Should I use star delta transformation ? If yes, how exactly should I use it ?
Homework Statement
What can be special cases, in the study of electrical circuits, in which one can not apply wye delta transformation? Can someone graph them in some way?
Homework Equations
The Attempt at a Solution
Given an electric circuit, with resistors R1 and R2, find the equivalent resistance R.
Data: R1 = √2.R2
Points M and N have the same electric potential so they can be connected with a conductor and this way we get the second circuit.
I know that when we have to identify the nodes for solving a circuit with nodal analysis we always have to designate a reference node (which will be the ground node) as a reference for measuring the others' voltages. However I was practicing this and I found this example on...
Homework Statement
Homework Equations
R ∝ 1/A
The Attempt at a Solution
Since there are six copper wires and a steel core, I added the resistance of all the wires and the core and divided them by 7, though I don't think my approach is right since the resistance of the copper and steel...
In an inductor, a current waveform 90o out of phase with the voltage waveform creates a condition where power is alternately absorbed and returned to the circuit by the inductor. If the inductor is perfect (no wire resistance, no magnetic core losses, etc.), it will dissipate zero power.
I...
Hello!
First of all, this is not a HW problem and I already solved it. Actually, it most likely was a HW problem for my friend who gave it to me. I would take the opportunity to ask exactly how to handle this: I'm not a student but I like going back to school exercises in Physics and gain deeper...
I'm a mechatronics engineering student, and I know that electronics is a requirement in most engineering programs. I'm been dealing with electronics recently and I've been studying electric circuits. I've been noticing that in some of them instead of being closed (in diagrams) they are like...
Can someone explain me,why Wheatstone bridge is most sensitive when all four resistances say A,B,C and D are equal?as far as i know condition for Wheatstone Bridge is A/B=C/D.
Homework Statement
The two headlights of a car sonsume a total power of 120 W. A driver parks the car but leaves the lights on. The 12-V battery is rated at 95 A * h.
Homework Equations
P=IV
V=IR
The Attempt at a Solution
I don't know any equation that associates this with time. [/B]
Electrons are moving in moves in all sorts of directions, causing the net electric charge to cancel out. But, when you apply a voltage, theres a small amount of electrons that will move towards the direction in the direction of the voltage. This is called the drift speed. Am I right? I read...
I'm delving into AC as well as attempting to understand the various wave forms used in electrical engineering, and I am curious how engineers are able to generate current which alternates in a sinusoidal manner. What specific phenomena allows us to achieve this? Is it a special circuit, or does...