All Questions
Tagged with capacitance charge
328
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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 ...
- 21
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1
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43
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Surface charge density within a parallel plate capacitor on different voltages
I need a way to vary the surface charge density without changing the electric field. My idea is to use two large conducting parallel plates close to each other in vacuum enclosed in a grounded vessel (...
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2
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What are the limitations of Nodal Analysis?
Yea, that's the question basically. What are the limitations of Nodal Analysis?
Like, for example take the following case, we have to find out the net capacitance between A and B.
Now I want to solve ...
- 374
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Why is the induced charge on the infinite plane expected to be $-q$?
3.2.2 page 123 of Griffiths E&M.
Place a charge $q$ a distance of $d$ above an infinite grounding conducting plane. The total charge induced on the conducting plane is then $-q$.
The last sentence ...
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1
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40
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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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4
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174
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Why does the capacitance of a capacitor depend on charge and potential?
The formula of capacitance is
$$C = \frac{Q}{V}.$$
So the capacitance of a capacitor should depend on the charge and potential but it doesn't. Why?
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1
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27
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Understanding Gauss' Law on Charged Sheets and Oppositely Charged Plates
I'm grappling with understanding Gauss' Law as applied to charged sheets and oppositely charged plates.
From what I've gathered, when using a Gaussian pillbox encompassing both sides of an infinite ...
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1
answer
47
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Electric fields around plates of charge vs sheets of charge, and then made into a capacitor
I've read over several other discussions on the topic of "electric field of a sheet of charge vs electric field of a charged plate", on this very site, but I still haven't gotten the answer ...
1
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2
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77
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How does capacitance of a capacitor not depend on the distance of the capacitor to a battery?
When you consider the positive terminal of battery, wire and capacitor plate, they form a single conductor, which is polarised by the field of the other capacitor plate, but it is not polarised as ...
- 155
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1
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88
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Distribution of charge in series capacitor arrangement
If I have 3 capacitors in series connected as shown- C1=C2=C3=C)
And let a charge 'Q' is on all 3 capacitors.
Then if a question is asked 'What is total charge in the circuit?'
Why '3Q' is the wrong ...
- 367
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31
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Do conductor plates encloising charged particles exert a force on one another due to the charges induced on them? How to calculate in a 1D model
I would very much appreciate some guidance on the below.
Consider a one-dimensional world as depicted in the attached figure.
We have two (lets say positively charged) particles enclosed by two ...
4
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872
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In JJ Thompson's experiment, why are electrons not making U turns?
In JJ Thompson's experiment,
Why are some electrons able to pass through the slit of the anode, rather than hitting the anode plate itself?
Even though electrons manage to get past the anode, will ...
- 161
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22
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Charge distribution on co-planar capacitors
I'm looking for books on a complete analysis of co-planar capacitors and their electric fields at DC, such as between narrow and wide traces on a PCB. Any suggestions?
I think there's a some research ...
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1
answer
35
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Determining vector fields in a Spherical Capacitor with Quadrant Dielectrics
I am working with a spherical capacitor consisting of an inner radius R1 and an outer radius R2. The region between the plates of the capacitor is filled with four dielectric materials, each shaped ...
- 103
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Basics of Capacitor
Looking at the formula $C = \frac{Q}{U}$ does a high capacitance mean that with a low voltage we can bring more charge onto the capacitor? How is total charge on the capacitor linked with voltage?
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