All Questions
Tagged with capacitance energy
63
questions
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3
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Insertion of dielectric inside capacitor when capacitor is connected to a battery
When a capacitor is connected to an external voltage and a dielectric is inserted slowly across the plates, the energy of the capacitor increases. The energy preciously is
$CV^2/2$ and after the ...
1
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0
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22
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Capacitor charging a battery [closed]
I can't comment to ask for circuit clarification on some of the other questions addressing this, insufficient reputation, so I am asking as a new question. Looking at answers to the other questions a ...
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1
vote
1
answer
28
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Energy conservation in dipole capacitor interactions
If we bring a separable dipole (say a single ammonium chloride molecule) from infinity to the center of a capacitor, once the dipole stabilizes and the rotational energy is lost to electromagnetic ...
1
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1
answer
173
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Electrostatic potential energy of two concentric spherical conductors [closed]
Suppose that a small spherical conductor is placed inside a hollow spherical conductor. The inner conductor has a charge $+q$, which induces a charge $-q$ on the inner surface of the hollow conductor, ...
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1
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44
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Work done by electrical forces, when separating plates of disconnected capacitor
Asking this because I could not understand the correct answer for a question.
Question goes like this:
A capacitor is charged with direct current, disconnected; plates are separated further ...
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2
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130
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Electric field and conservation of energy [closed]
I have a question of conservation of energy. Let's say I have two charged plates, one positively charged and the other negatively charged. Both have a hole and an electric field exists between the two ...
1
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1
answer
255
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Confusion involving the energy stored on a capacitor
In A-level physics, one is told that:
The energy stored in a capacitor with charge $Q$, capacitance $C$ and voltage across the plates $V$ is: $$\frac{1}{2}\frac{Q^2}{C}=\frac{1}{2}QV=\frac{1}{2}CV^2$$...
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1
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1
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Does a spherical capacitor hold as much energy as a spherical shell?
Consider a spherical capacitor, that is, two concentrical spherical shells which serve as plates. Suppose the capacitor is charged. It is my understanding that the energy stored by a capacitor is ...
1
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2
answers
256
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Work-energy theorem giving no work done on capacitor and dielectric when dielectric removed from capacitor [closed]
For this problem,
Do you please know why when considering that the capacitor and dielectric is our system, the work energy theorem gives the wrong sign for the change in electrostatic potential ...
- 49
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1
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29
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If i consider capacitor discharging process..and i take wires resistance zero..put the capacitor in vacuum .. where does all the energy go...? [duplicate]
If i consider capacitor discharging process.and i take wires resistance zero.put the capacitor in vacuum . where does all the energy go?like is it the displacement current .but there's no medium then....
31
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10
answers
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How is energy "stored in an electric field"?
My physics teacher told me the statement "The energy of a capacitor is stored in its electric field".
Now this confuses me a bit. I understand the energy of a capacitor as a result of the ...
- 492
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3
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Energy of capacitors in Series and Parallel
I'm just confused in general about what happens with charge, voltage, etc in parallel and series circuits with capacitors.
Anyways, I'm trying to find the total energy stored in $2$ equivalent ...
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1
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72
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Can anyone please tell me what will be the final charge distribution? [closed]
What happens after we close the switch,
(a) $c_1=$ capacitance of the upper parallel plate capacitor having $Q_1$ charge
(b) $c_2 =$ capcitance of the lowerparallel plate capacitor having $Q_2$ charge ...
user327809
3
votes
2
answers
206
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Can anyone please tell me the location of energy?
the formula $Q^2/2C$ gives the energy for a concentric spherical capacitor, where $C=$capacitance of the capacitor and $Q=$charge but i cannot understand where the energy is situated. is it in the ...
user327809
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127
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Capacitor microphones for recording studios
This question is formulated exclusively for high school students precisely to interest them in a more concrete way.
Condenser microphones are characterized by a capsule that functions exactly like an ...
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