All Questions
Tagged with electromagnetic-induction magnetic-fields
149
questions with no upvoted or accepted answers
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Faraday's law and motional EMF
My understanding of motional EMF is that one of the ways it is created is by moving a conductor (moving such that its orientation doesn't change) in a uniform magnetic field (non changing). EMF is ...
- 1,481
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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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Can magnetic resonant inductive coupling work in magnetic resonance (specifically in NMR and MRI)?
Radiofrequencies are usually used to flip polarized nuclei in a magnetic field in NMR and MRI. These RF correspond to the Larmor frequency of those nuclei.
Since the effect from the RF is usually due ...
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The rate with which the coil intercepts the magnetic field
I came across this MCQ in my text book (question number 9) I thought the answer would be (a) but the correct one is (e), and I really don't get it, could you please explain it for me?
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How to calculate the electric field induced by a changing line current, using simple math?
I understand from Faraday's Law of induction that any change in the magnetic flux acting on a conductor should force the charge carriers there to accelarate.
So far,all the examples I have found were ...
- 301
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Mutual Inductance with non-homogeneous magnetic reluctance medium
Given two inductive circuit elements, it can be shown that the inductance coefficient between the first one and the second one is the same as the inductance coefficient between the second one and the ...
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Formula for calculating magnetic vector potential in presence of displacement current density only
Suppose to have a volume $\tau$ where a displacement current density $\vec{j_S}$ is present. Can the magnetic vector potential be calculated using the following formula?
$$\vec{A}=\frac{\mu_0}{4\pi}\...
- 2,617
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Magnetic Flux Linkage of Object
$N\phi = $ Magnetic Flux Linkage $ = BAN\cos\theta$
Where $N$ is the number of coils in a solenoid and $\theta$ is the angle between the normal of the 2D surface and the magnetic field lines.
(...
- 1,819
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Modeling the working of a transformer by pushing magnet into a coil
Let me go step-by-step.
First I will outline a simple transformer. There are two circuits next to each other (not touching). One is an electromagnet set-up (with AC supply) and the other has a ...
- 250
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Motion of a conducting loop in a time-dependent external magnetic field
The problem statement:
"A conducting ring of radius 'r' is held stationary in a magnetic field $\vec{B}$ which, initially has a magnitude of $B_0$ and is inclined at $45^\text{o}$ to the area ...
- 89
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Energy stored in an Inductor is used to move electrons
I was reading about the energy stored in an Inductor and first of all I had the question that is this actually stored? The inductor produces a magnetic field which exerts a force on electrons. Isn't ...
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Electric field of moving charge
Does the electric field of a moving charge (constant velocity) change with time? Or it remains the same?
I know that changing electric fields produce a magnetic field, but in a straight, current-...
user324098
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2
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Radially magnetize a ring magnet?
I need to radially magnetize a ring made of a magnetic alloy. Do I need two solenoids to do this? If yes, one should be inside as a cathode and the other outside as the anode? Practically, which ...
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Are the value of the magnetic field of a current carrying coil and the magnetic dipole moments of the involved electrons comparable?
The magentic dipole moment of electrons is a intrinsic property. To get the macroscopic effect of their common magnetic field this moments have to be aligned, like in permanent magnets or in current ...
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