All Questions
Tagged with electromagnetism inductance
384
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3
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Kirchhoff law and Inductors
I am struggling with using Kirchhoff's rule in circuits with Inductors. Looks like if you have an inductor, we have Electric field (E) that is created using a time varying magnetic field and that E is ...
CommunityBot
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An *actual*, relativistic, intuitive explanation for inductance…?
I searched high and low, and as far as I can tell, after years, there is not a single video or site that actually explains inductance in an intuitive way.
I mean an actual explanation. Not “Faraday’s ...
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1
answer
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Derivation of self-inductance of a long wire: Is my interpretation correct?
Derivation of self-inductance of a long wire
Flux linkage inside of a conductor
Flux linkage inside conductor
So many people asked the same question, yet no satisfactory answers. I tried to develop my ...
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What exactly is the formula of total flux linkage? Is it $dλ=dΨ *\frac{\text { Ienclosed}}{I}$ or $λ=N*Ψ$?
In Sadiku, he used the formula $dλ=dΨ *\frac{\text { Ienclosed}}{I}$
to determine the total flux linkage for coaxial cable for $ρ<a$ and for $a<ρ<b$, but I applied this formula for the ...
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Doubt in RL circuit and Kirchoffs law [duplicate]
We know that kirchoff's second law is based on the fact that in any closed circuit: $$\oint \vec{E}\cdot\vec{dl}=0$$
Now let us take a simple LR cirucit with one battery $E$,resistor $R$, inductor $L$....
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1
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Current through a solenoid: magnetic field gives a staircase graph
We were running current through a solenoid coil with an iron core, and measuring the resultant magnetic field strength. We expected a purely linear relation for the "current-field strength" ...
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2
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One solenoid inside the other
If I place one solenoid inside of the other, both of them in the same direction and same amount of loops, will the inductance be doubled or will it be zero?
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Doubt in the mode of action of inductor in the RL circuit
I feel that my initial question was slightly incoherent and not precise. So instead of making addendum to the question which is making it lengthier, I am editing it completely. So, sorry about that.
...
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Inductance of wire over a ground plane: does it change with frequency?
Typically inductance is calculated in the framework of DC currents, i.e. magnetostatic conditions.
Then, the value of the inductance is adjusted for the case where the current is no longer DC.
One ...
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1
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1
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Does the presence of a disconnected coil nearby affect the self-inductance of a coil under test?
Picture two coils in close proximity. They have the same dimensions and are located co-axially, with a small gap between then (like Helmholtz coils, but much closer together than in the standard ...
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3
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When mutual inductance is occurring between two coils, is self inductance always occurring in each individual coil?
When a coil connected to an AC generator creates an EMF in another nearby coil (mutual inductance), is self inductance simultaneously occurring in both coils?
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Finding the Magnetic Field within a solenoid
So, I have to find the magnetic field within a solenoid such that the field at a point(on axis) is half than that it would be at the centre. Length of the solenoid is 20cm and the current through it ...
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2
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The direction of induced electric field around a changing current wire
I saw in my textbook that the induced electric field around a changing current wire is parallel to the direction of the current, for example:
Why is that?
Thanks!
- 39k
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4
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Why isn't there any current in the primary if secondary circuit is opened in a transformer?
Consider an ideal transformer, with no load/resistor attached on the secondary (ppen circuit). It is said that the primary would act as if it is an open circuit too, thus no current flows through the ...
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Can someone please clear this doubt regarding Lenz's Law?
In Lenz's Law or Faraday's Law of Electromagnetic Induction, whenever there is a change in magnetic flux in a solenoid due to an external magnetic field like an approaching magnet there is an EMF ...
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