Questions tagged [electrical-resistance]
The tag applies to electrical resistance and resistors. DO NOT USE THIS TAG for non-electrical resistance.
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This AC Circuit using Complex numbers [closed]
In the q attached below, I wanted to solve it using Complex Numbers, but I wasn't able to arrive at a desired result.
Attaching my working too
Please let me know where I went wrong, as I tried to do ...
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I am having trouble in this question, please someone help me out! [closed]
What is the current supplied from the battery?
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Proof of concept of symmetry for circuits [closed]
In my textbook the method of symmetry for solving complicated symmetrical circuits . I have the intuition of why the idea of symmetry works but I’m unable to prove it mathematically using Kirchoff’s ...
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How to count simple resistor circuit configurations? [closed]
Really stumped by this one (I'm not an EE!). Suppose we are given 1, 2, 3, 4, 5, and 6 one-ohm resistors. They can be arranged in series, parallel, bridge, and so forth circuits. No dangling resistors ...
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Why do lamps in circuit have potential difference but two points in cable without anything in the middle of it have no potential difference?
I'm preparing for my EE major, this is my starting point.
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Precise relation between temperature change and physical quantities [duplicate]
I've learnt that many physical quantities like length or volume etc depend on the change in temperature and some proportionality constant as: $\Delta{L}=l\alpha\Delta{\theta}$. In our physics class, ...
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Visualization of resistance [closed]
What does a resistor do in an electrical circuit? Does it impede the flow of electrons by increasing offering a path that offers a large no. of collisions? How can i visualise it, i have been told to ...
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Why is my idea of voltage drop wrong?
when battery is connected to 2 ends of a wire, potential difference is created, this causes electric field causing electrons to move, the field gives the electron electric potential and the thus ...
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Doubts in circuit analysis [closed]
I am really confused here
how is the potential at O found?
Resistance is equal at all resistors
this is an illustration in my book, they have not explained why voltage at O is 50V, just stated that ...
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Charge conservation in ohmic material - Apparent paradox
Consider an ohmic material with constant conductivity, which obeys the relation:
$$\vec J = \sigma \vec E$$
where $\vec J$ is the current density and $\sigma$ is the conductivity. Applying the first ...
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To find the equivalent resistance between points A and B in the circuit [duplicate]
The question is to find equivalent resistance between A and B. My teacher solved it by marking equipotential points and modifying the circuit as shown below
Clearly, as per the modified circuit, the ...
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Potential difference when two emf sources are connected in a simple loop circuit
I am having difficulty understanding the equation below for the potential difference between the two terminals of an electromotive source when two sources are connected from Sear and Zemansky's ...
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Why is current the same when batteries are connected in series? [closed]
I struggle to understand why the current remains the same in the circuit when batteries are connected in series.
Update
I can reason with it if someone can confirm the update.
If the speed of ...
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How to solve the transient response of a general $RLC$ network?
There is a $RLC$ network $\{V_i\}$ with a complex impedance $Z_{ij}$ on each edge. all vertices have initial voltage $V_i$ and all edges have initial current $I_{ij}$. Now, is there a general way to ...
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Can resistors having equal magnitudes of potential difference be considered to be in parallel?
More specifically, if potential difference across a resistor, is exactly negative of the potential difference across another resistor, can they be considered to be in parallel? If so, why?
Can the ...
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