All Questions
25
questions
0
votes
1
answer
95
views
Will the electrical potential difference between the Windward and Leeward sides of a mountain range generate electrical current?
I would like to know if it is possible that the electrical potential difference between the Windward side and the Leeward side of a mountain range, due to a thunderstorm occurring on the Windward side,...
- 478
2
votes
0
answers
73
views
Induced charge on conducting sphere sliced by a plane
We are given a conducting solid sphere, and it is cut by a plane as shown.
A charge $Q$ is given to the smaller part of the conductor, and it is required to find the induced charge on the surface of ...
- 428
0
votes
3
answers
84
views
About lightning and lightning conductor
Lightning not only strikes on a lightning conductor installed on the building... Lightning can strike anywhere on the surface roof of the building even though that building has installed a lightning ...
- 31
0
votes
1
answer
59
views
If metals can’t sustain an electric field inside them (as their electrons move to cancel it out), how do they still conduct electricity? [duplicate]
I tried to understand by my own couldn't do so.
- 103
1
vote
1
answer
60
views
Is Faraday's cage described in electrostatic 100% insulated?
I apologies if my wording is bad or it is duplicate.
I'm new to Electrostatics. During the topic of conductors & electric
field I was introduced to Electrostatic Equilibrium state in which
the ...
user380217
0
votes
0
answers
18
views
Is Net force per unit charge zero in a conductor in the presence of a magnetic field?
Let's assume there is a perfect conductor. This conductor starts moving with a constant velocity in the presence of an external electric field and magnetic field.
Generally an external magnetic field ...
-1
votes
2
answers
72
views
Reasoning why the lightning shocks doesnt cause any shocks to a person inside car if the conditon is not fully electrostatic
I am just confirming here how the concept of electrostatic shielding helps in preventing lightining to be not getting into the car inside .
So we know car has a metal body outside , so first consider ...
- 235
0
votes
1
answer
154
views
Would a grounded copper heat sink located near a room's ceiling be an effective way to reduce a room's temperature?
I am thinking about a cheap but effective way to reduce the temperature of my bedroom in my apartment during hot summer nights. I live in an old apartment building and the air conditioner located in ...
- 478
2
votes
2
answers
108
views
How can net field inside a conductor be zero at every point? What if a charged particle is at that point?
The net electric field at any point inside a conductor which is not connected to an EMF source is zero and an external field is present. What is net electric field? It is the net field due to all the ...
- 480
0
votes
1
answer
82
views
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 ...
- 446
0
votes
0
answers
43
views
Confusion with Electrostatic Potential Difference
Suppose that you have a positively charged plate at a plane (xy-plane, for example). Therefore this plate exerts an electric field with a magnitude of σ/2ε₀. Due to this, there will be the same ...
- 87
1
vote
1
answer
565
views
Can a conductor be uniformly charged?
I have been reading in books that charges on a conductor resides on its surface and that for a body to be uniformly charged it has to be an insulator.Is it true?If yes does it mean we can consider a ...
0
votes
4
answers
2k
views
Charge on hollow spherical surface
Let a point charge $+Q$ is placed in center of hollow spherical conductor of inner radius $a$ and outer surface $b$. Then the charge on the inner surface of radius $a$ is $-Q$ and outermost surface ...
- 135
0
votes
3
answers
544
views
Electric shielding skin depth
I read that lower the frequency,the deeper is the skin depth in conductor.If we are using piece of thin conductor,like aluminum foil for example to shield something from electric fields,it would ...
- 734
1
vote
4
answers
2k
views
Car hit by a lightning strike
In Griffiths' Introduction to Electrodynamics, at the Electrostatics chapter, in particular, in the conductors section, he says this after the stating that within an empty cavity surrounded by a ...
- 474