All Questions
79
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What shape does the Induced Electric Field Lines take when in a region there is Non Cylindrical Time Varying Magnetic Field?
Everywhere in the literature I have across, I find that whenever the discussion of the Induced electric field comes, it is discussed around a cylindrical time-varying magnetic field. The induced ...
- 2,517
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votes
1
answer
329
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Why exactly does a current flow in an inductor oppose itself
So, I've understood that a current flow in an inductor produces
1) The original magnetic field along the direction of the curl E of the inductor.
2)Change in the magnetic field along the opposite ...
- 581
3
votes
1
answer
2k
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Why is the electric field induced due to a Time varying magnetic field non-conservative?
As the title states, Why is the Electric Field which is induced due to a time varying Magnetic Field Non Conservative in nature ?
Everywhere I read the answer that the line integral over a closed ...
0
votes
1
answer
17
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Different electric fields
What is the difference between an $electrostatic$ and a $non-electrostatic$ electric field?
- 9
1
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1
answer
210
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Induced Electric Fields and Faraday's Law
I'm an undergraduate student and we just covered Faraday's law. However, I am still confused conceptually about a few things:
Faraday's law states that $\oint_{\partial\Sigma} \vec{E} \cdot \vec{dl} =...
- 107
4
votes
1
answer
1k
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Is there is any way to prove the Faraday's law of induction?
I want to know if there is any way to prove the Faraday's law or is it just an experimental observed phenomena?
More specifically, is there any reason why the proportionality constant is 1? How did ...
- 170
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votes
1
answer
344
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Can you demonstrate Faraday's Law using self induction
I have learnt about an experiment to demonstrate Faraday's law using the setup below. In the experiment a solenoid is connected across a signal generator, whose frequency can be altered, and a search ...
- 149
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1
answer
388
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Infinite charged sheet kicked into motion - Electric field direction?
In volume two of the Feynman Lectures on Physics, Chapter 18, here: http://www.feynmanlectures.caltech.edu/II_18.html
There is a scenario in which an infinitely extending charged sheet is suddenly ...
user154080
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1
answer
2k
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What is the difference between the current and the electric field?
We know that a changing electric field generates a magnetic field and that a changing magnetic field generates an electric field. But does a magnetic field generate a current ?
We also know that a ...
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5
votes
3
answers
225
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Which is more correct - a changing $B$ field induces a current or an electric field?
I am in an introduction to Electricity and Magnetism class and we are using Griffiths. In example 7.8 on page 318, his solution says that the "changing magnetic field induces an electric field". But I ...
- 455
1
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1
answer
297
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Electromagnet inside a conducting shell
I am asking this to enquire whether what I am thinking is right or not because I have not heard or read about any such example ( which came to mind just now).*
Consider an electromagnet ( I can ...
- 2,797
0
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2
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239
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Induction heating
An induction cooktop has a high frequency power source that is applied to a coil. I was wondering if you could take the high frequency electronics on a cooktop and instead of a coil take a 30 or 90 ...
- 11
3
votes
2
answers
200
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Maxwell equations and electric and magnetic fields produced repeatedly
Consider the two Maxwell equations (in the case of no conduction currents):
$$\mathrm{rot}\bf{E}=-\frac{\partial \bf{B}}{\partial t}\tag{1}$$
$$\mathrm{rot}\bf{B}=\mu_0 \epsilon_0\frac{\partial \bf{E}}...
- 2,617
9
votes
6
answers
41k
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Why does a changing magnetic field produce a current?
A changing magnetic field induces a current in a conductor. For example, if we move a bar magnet near a conductor loop, a current gets induced in it.
Faraday's law states that
The E.M.F. $\...
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