All Questions
13
questions
2
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0
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72
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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
1
vote
1
answer
59
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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
10
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Effect of pulsed electric field on the temperature of a conductor
I am wondering if my physical intuition regarding the following situation is correct.
Suppose we have an ordinary neutral conductor (say an ordinary piece of metal). We now turn on an electric field. ...
0
votes
0
answers
27
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Can you measure different currents at different contact points for a volume of material made of two different metals with different conductivities?
My question is about the variation of conductivity in a volume of material and its effect on measured current. A volume is comprised of two metals joined symmetrically in a cuboid shape as in the ...
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
62
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GENERATION OF CURRENT DUE TO ELECTRON FLOW
Why do flow of electrons generate current? whenever an electrons flows through a wire it generates electricity why does it actually happen?
- 31
0
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0
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26
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What causes the charges in conductor to move towards lower potential terminal of cell [duplicate]
Whenever a conductor is connected to a cell,what causes the conventional positivecharges inside it to move towards the lower potential level of cell..
My question is whether the charges experience a ...
- 31
1
vote
1
answer
130
views
Why electric field not coming out of a conductor when current flows?
Why electric field not coming out of a conductor?
With the knowledge of High school physics, I assumed that I have learned following regarding Electric Current.
Current is moving charge and defined ...
- 11
1
vote
2
answers
153
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Creation of electric field inside a conductor
My book says that as soon as the two ends of a conducting wire touches the two terminals of a battery, it generates an electric field inside the conductor. Why?
- 31
1
vote
1
answer
756
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derivative of the electric field along the normal to the surface near the conductor
how to derive the formula approves the derivative of the electric field along the normal to the surface near the conductor is inversely proportional to the principal radii of curvature?
$\frac{\...
- 83
2
votes
0
answers
176
views
Van der pauw method for an isolated hole
Van der pauw method is a way to measure the resistivity of a material with arbitrary shape while it meets some specifications ( being homogeneous and ...).
One of the conditions is that the sample ...
- 322
29
votes
5
answers
29k
views
Why is there an electric field in a wire even though it is a conductor?
If you take a perfect conductor, there cannot be a field across it since if there were, the particles would arrange themselves in a way to cancel out the field right?
Yet, why does the same not hold ...
- 1,585
0
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1
answer
2k
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What is wavelength of electric field generated in a wire? [closed]
I read link given below:
http://en.wikipedia.org/wiki/Speed_of_electricity
Above link says
_The speed at which energy or signals travel down a cable is actually the speed of the electromagnetic ...
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