All Questions
Tagged with capacitance homework-and-exercises
392
questions
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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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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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Capacitance, Rate of charge flow
In the given circuit how would the charge on capacitor vary with time if switch is closed at $t=0$. I know it will increase with time but what will be the exact function. My book says it will be $CE(1-...
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What is the voltage across the capacitor and the charge it stores
Assume the switch has been on for a long time. Is it always the case that the voltage across the capacitor = the voltage of the battery? Even though they're in parallel.
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How does this circuit behave?
A,B are connected to a battery with $V$ voltage. When $S$ is open we can just calcualte the total capacitance simply. What happens when it's close? I don't see which capacitors are connected series ...
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Dielectric between capacitor
I encountered the following problem:
A parallel plate capacitor has plate area $A$ and plate separation $d$.The space between the plates is filled up to a thickness $x<d$ with a dielectric of ...
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How to find the capacitance between two metal sheets [closed]
Let’s say I have two metal sheets in a 2D plane. The first one has area A, the second one is infinitely long, and they are separated from each other by a distance d. How can I find the capacitance ...
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Question about time behaviour of capacitor [closed]
Looking at the following circuit:
What would happen right after S is closed and what happens after a while of running?
My idea is that right after closing there will be a short-circuit like behaviour,...
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Theoretical expression for the capacitance of interdigitated electrodes
I am trying to determine the capacitance of interdigitated electrodes, like these:
According to the paper, it can be calculated by:
$$C=\varepsilon \frac{(2l_0-a+2w_0)t_0}{d_0}(2n-1) \tag{1}$$
Where $...
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Voltage across a capacitor in a circuit [closed]
I'm trying to find the voltage across the capacitor when it is fully charged in the attached diagram, I haven't done a problem like this before and I'm quite confused on what I am supposed to do to ...
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Determining if a capacitor will charge or discharge based on voltage [closed]
The question also says that the voltage of the battery is 12 V. We're supposed to determine if the capacitor is charging or discharging or neither. I'm just not sure how to use the voltages given to ...
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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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Is it possible to find $i’(0)$ and $i(0)$ by building and measuring say voltage across the $RLC$ circuit?
The RLC circuit equation is,
$$L\frac{\mathrm{d}^2i}{\mathrm{d}t^2}+R\frac{\mathrm{d}i}{\mathrm{d}t}+\frac{1}{C}i=0.$$
I want to know if it is possible to figure out $i’(0)$ and $i(0)$ through the ...
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1
answer
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Multiple batteries in a capacitive closed circuit [closed]
In the photo I added,there is a question as you can see and its given solution. When the switch S was open, charge on each capacitor was calculated and the voltage was taken as the net voltage of the ...
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Forbidden capacitance in LC circuit connected to AC source [closed]
While solving problems on AC circuits, I came across one that had a circuit connection as shown below.
The question was to find the value of "the capacitance that can never be used in this ...
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