All Questions
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Does making a conductor spiky increase its capacitance?
I'm thinking of the proofs for "charge accumulation at the points of a spiky conductor" e.g. https://www.feynmanlectures.caltech.edu/II_06.html 6-11
If charge accumulates at sharp edges, I'm ...
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1
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1
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53
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Is it necessary that a capacitor stores charge?
Is it necessary that a capacitor storage charge? I am a little bit confused.
For example: if I take two concentric conducting shells and a positive point charge at the centre. Both the surfaces (outer ...
- 99
1
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1
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167
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Capacitance due to accumulation of charge on the interface between resistors
It is well known that the continuity condition for current density necessitates that at a steady state:
$$\frac{\rho}{\epsilon_0}=-\frac{E\cdot \nabla \sigma}{\sigma}$$
Where $\sigma$ is the ...
- 234
1
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1
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163
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How increased current carrying capacity / ampacity affects wire gauge size [closed]
In selecting a suitable wire size for manufacturing:
If I have a material that has the same resistivity and density as Copper, but has a higher current carrying capacity / ampacity for the same ...
- 11
0
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1
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Charging a capacitor
Below is an excerpt from a physics textbook:
One common way to charge a capacitor is to connect these two wires to opposite terminals of a battery. Once the charges $Q$ and $-Q$ are established on ...
- 103