Questions tagged [electric-circuits]
An electronic system, with closed loop current flow, and relative electrical potentials present across electrical components.
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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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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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Confusing definitions of EMF
I was studying about EMF (electromotive force) recently but had trouble connecting the two definitions of the topic. Here are the two definitions of EMF listed in my book (The book I've referred is: ...
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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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How can I deduce a capacitance of a capacitor without existing formulaes?
Understanding Charge Accumulation in Capacitors Connected in Series
I've been exploring the behavior of capacitors connected in series and developing a conceptual model to understand how charge ...
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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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Volume distribution of charge in a wire in a DC circuit
According to this and several other articles some amount of charge in a DC circuit distributes itself on the surface of the conductor, making the electric field inside parallel to the said surface.
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How do conductors actually work in electrostatics? [closed]
I am mainly confused because we are learning about conductors in electrostatics, and I always think of an electric wire connected to a phone charging it (a phone charger). So, when I hear "...
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Confusion regarding phase
As far as I know about phase if the phase difference between two waves is positive, the former is leading..and the latter is lagging. Then why has D J Grifith stated this?
If the phase of the magnetic ...
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Working of batteries and supply of charges through them when connected to capacitors
My doubt is not really related to capacitance but about the fundamentals of working of a battery.
A capacitor with certain capacitance is charged as shown in the figure.
Please note that battery is ...
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Charge distribution in a circuit [closed]
Is it possible to find the charge density at any point in a conducting wire in a circuit, assuming the only resistance is being provided by the wire itself? And if it is, what would that function look ...
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Weird looking sine wave behavior in an electric circuit
while studying an RLC circuit I noticed some weird like sine waves at low frequencies (1-9 kHertz) on the inductor,
The amplitude behavior did not follow the theoretical model. Instead, suggested the ...
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Cannot catch a minus sign mistake when deriving the ODE for an LC circuit
It's probably a very basic question but I just cannot wrap my mind around it. I'll just try to derive the differential equation for an LC circuit:
According to the law of induction, in a solenoid we ...
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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 ...
