Questions tagged [capacitance]
The ability of an object to store electric charge.
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Current through points with no voltage drop
I've had a problem with switches in between parallel circuits.
In this textbook question:
The answers state "Note that there is no voltage drop across the voltmeter". However, there is a ...
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A capacitor partially filled with dielectric [closed]
Assume a parallel plate capacitor that was charged up to $Q_0$ from a source $U_0$ and then disconnected from the voltage source. The plates have an area $A$ and the distance between the plates is $d$....
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Energy in Dielectric Medium as a Sea of Dipoles
Simply, why is the energy density in a dielectric medium = $\frac{1}{2}K\epsilon_oE^2$ where K is the dielectric constant of the dielectric medium?
Working proof
Consider a capacitor that is charged ...
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Parallel plate capacitors with dielectrics [closed]
I was studying capacitors with dielectrics ,where my teacher gave one example for us to solve
between the parallel plate capacitor there is dielectric which is further divided into four dielectrics ,...
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Charging a capacitor without closing a circuit
It might sound absurd but is it possible to charge a capacitor solely by connecting the positive terminal of a battery to one plate of the capacitor and the negative terminal of another identical ...
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Electric field at a point due to dielectric inserted in between a parallel plate capacitor [closed]
Here, I have a parallel plate capacitor with each plate having surface charge density $\sigma$. A dielectric of dielectric constant $K$, is inserted partially between the two plates. What would be the ...
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How will the capacitance of a capacitor reduce when the distance between the plates is increased?
Now I know that if the potential difference between the plates increase that capacitance will reduce, but for that also I thought as the distance between the plates increases, the electric field ...
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Understanding dielectrics on the basis of induced charge and energy density
Simply, why is the energy density in a dielectric medium = $\frac{1}{2} K \epsilon_o E^2$?
For a simple case such as that of a capacitor with a dielectric medium inside it, to find the magnitude of ...
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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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Maxwell stress tensor on a capacitor late given a dielectric
Given a capacitor with large plates (area $A$) separated by a dielectric with relative permittivity $\varepsilon_r$ and thickness $g$, I believe the Maxwell stress tensor states that the force on each ...
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Equivalent capacitance for a system of spherical capacitors
The question demands equivalent capacitance of two concentric metallic shells with larger and smaller radii. b and a respectively. The inner sphere is just left open(it's not earthed or anything), and ...
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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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Growth of Current in an Inductor Connected Across a Battery [duplicate]
When baterry is connected across inductor with no resistance in circuit, won't the current flowing through it be zero, as inductor back emf will counteract the effect of potential difference due to ...
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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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Using an imaginary conducting shell of infinite radius to calculate capacitance of a spherical conductor
This is a statement from Serway's Modern Physics which I don't understand. It tries to explain capaticance for a single conductor.
Imagine a single spherical charged conductor. The electric field ...
