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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,...
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 ...
4 votes
10 answers
37k views

What is the dielectric constant of a pure conductor?

Dielectric constant is the ratio of permittivity of a medium to the permittivity of free space. How to find dielectric constant of a conductor?
1 vote
1 answer
41 views

Confusion about EM waves in a conductor, AC in wires, and skin effect

I am trying to get my head around these different points: From Maxwell's equations we find that an electromagnetic wave in a conductor decays in amplitude with a characteristic length of about 1 cm in ...
0 votes
0 answers
36 views

Maximum mean distance electrons can travel in ballistic conduction?

How far in mean distance can electrons reasonably travel via ballistic conduction according to the current model and what is the current mean or average distance or length record for ballistic ...
5 votes
4 answers
2k views

Temperature distribution in a current carrying conductor

A rod of uniform cross section and composition is connected across a battery. Let the middle part of the rod(when divided into three equal parts) is heated uniformly. A book says that the temperature ...
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 ...
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.
0 votes
3 answers
134 views

Would this simple design function as an electromagnet?

I was thinking about electromagnets today and a thought popped up in my mind on what would be a very simple way to create an electromagnet. Although I have not built and tested it, I am pretty sure ...
1 vote
2 answers
491 views

Effect of electroplating on resistance

How will resistance of a wire be affected if I electroplate it with copper will it decrease ? And if yes then will the decrease be significant? I need to find a topic for my project I thought it might ...
-3 votes
1 answer
2k views

Physics of throwing a power cord into a swimming pool

I saw a few questions related to swimming pools so I figured out I may ask here. If one takes a power cord that's plugged into a wall socket on one end and throws the other end in a bath, it may kill ...
0 votes
2 answers
481 views

Conduction and ionic conduction

How is ionic conduction different from normal conduction? Do the electrons that leave atoms completely conduct in ionic conduction while in normal conduction the conduction takes place through valence ...
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 ...
0 votes
1 answer
180 views

Does the physical shape of a current carrying conductor affect the shape of its magnetic field?

I am wondering if the physical shape of a current carrying conductor will have any effect on the shape of its magnetic field or is it that the magnetic field surrounding any current carrying conductor ...
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 ...

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