Questions tagged [electric-field]
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Electrically long loop antenna with homogenous near B field inside antenna loop
I wanted to know is it possible to create a loop antenna that functions in a way like a high frequency helmholtz coil. Because a helmholtz coil is usually made with multiple turns of wire having high ...
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Numerical calculation of the Electric field in a system knowing the potentials on the contour
I have a problem in numerically determining the electric field lines given the potential in a system described in the photo. The electric field vector E is related to the potential at a point with the ...
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Can a photon be modeled using AC driven electron and AC driven wire loop?
Can a photon ("electromagnetic wave packet") be simulated in software as an electron bouncing up and down (for the oscillating E field) and a loop of electrons with neutralized electrostatic ...
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Electromagnetics - Calculating electric field vector given an equipotential surface
I'm trying to figure out how to calculate the electric field vector given an equipotential surface with the equation \$ x^3 + y^2 +z = 1000 \$ where x, y, z are positive. The potential on the surface ...
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What differences in terms of fields does a grounded metal and an unconnected metal object have
I previously asked a question regarding absorption and reflections of waves to metal. But id like to know the differences that say a PCB metal pour that is connected to a signals return path, and a ...
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Electric field in power transistors
I had a question about power transistors, why are small fields used in power transistors?
I think this question could be because the voltage is high, but mostly in terms of the transistor structure I ...
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How do I accurately recreate the ER effect (using electro-rheological fluid)?
I am working on a project that makes use of the unique properties of electro-rheological fluid (ERF), a substance that changes viscosity when an electric field is applied:
For this project, I want to ...
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Effect of high voltage electric field on the motion of charged particles in an isolated tube
Please refer to the image for a visualization of the schematic.
I feel I am trapped at this stage. I am trying to understand the following:
In a closed container, charged particles are moving from the ...
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Measuring if a capacitor on mains is turned on by measuring radiated electrical fields far away
There is a house connected to German mains with hot, neutral and ground. Some distance away in the village there is a PWM source (most propably a solar inverter) which shows as 17kHz on the mains ...
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Why do we want detaching field lines in an antenna?
I have some questions about the link between the intuitive explanation for why an antenna radiates (based on this video) and the Maxwell equations.
Q1. The video starts by saying that "an ...
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Why do the metal sticks (for the ground) on the ground plane antenna reflect and not absorb?
From my current knowledge, any metal whether grounded (and or earthed) or not will reflect radio waves as seen on dishes, Faraday cages, etc. On the other side the ground in transmission lines or the ...
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"Toroidal transformer action in the presence of total B field confinement" (?!) Is Wikipedia wrong?
Wikipedia has an article about toroidal transformers and inductors. It is well known that an ideal toroidally wound coil has total magnetic field confinement due to symmetry in the case where the ...
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How to determine the collector current limiting resistors for the Darlington's pair of transistors?
How were the resistors in the circuit calculated?, I would like to come up with a similar circuit but for a 5VDC power supply, and I would like to resize the resistors as per my load requirement, my ...
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How can I calculate the current induced in the copper coil that is wrapped around a single phase of an 11kV, 2616A distribution line?
Aim: To develop an alert system for power outages in the distribution line, informing electricians of their occurrence.
Working Principal:
Fuse Monitoring: The Arduino measures the status of the power ...
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Can a strong electrical field at power frequency (50 or 60 Hz) be dangerous to humans? [closed]
Usually, what is dangerous about electricity is the current – voltage is important as it will determine the current through a given impedance, but not "dangerous per se". So far, so clear.
I ...
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