All Questions
Tagged with electromagnetic-induction magnetic-fields
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Currently arguing with my teacher about this electromagnetism question, any helpers?
Sorry if my Q is simple, I'm still in high school.
I'm currently arguing with my physics teacher regarding a Q, shown below.
The answers state this.
However, I am attempting to argue that the ...
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How to find permeability of a magnetic material?
I have been working with magnetic materials for quite some time now and never really explored this fundamental parameter. After looking through the literature I realize there and quite few different ...
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Ampere's law on solenoid, using a circular loop
Suppose we take a long and tightly wound solenoid with current I going in it. We can find the field inside, by ampere's law, taking a rectangular loop and assuming the magnetic field just outside the ...
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Should a wire loop moving through a constant rectangular magnetic field directed perpendicular to it's motion have zero induced current in the middle?
Suppose we have a loop of copper wire moving perpendicularly through a constant finite rectangular magnetic field directed into the screen .
When the loop enters the field, the induced current would ...
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What is the difference between the induction of a magnetic field $B$ and the magnetic field strength $H$?
I just started learning about magnetic fields by myself. In my textbook it says that the magnitude or intensity of induction of a magnetic field is equal to the amount of field lines that pass through ...
CommunityBot
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Does the electric field ($E$ caused by induction) of a moving conductor in a magnetic field drop when connected to a curcuit?
We know that when a conductor moves in a homogenous magnetic field that is perpendicular to itself due to the amount of electric charge gathered on one end of the conductor( as a result of the lorentz ...
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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 ...
CommunityBot
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How does magnetic hysteresis (ie. the $B$-$H$ curve) transform the input-output of a guitar pickup or speaker?
I understand that magnetically dependent equipment like a guitar pickup or speaker are affected by magnetic hysteresis.
Here is an article discussing the effect on speakers for example. That article ...
CommunityBot
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Induce electric field in an incomplete circular conducting loop
I was solving a numerical example(image1) of 'Griffiths book of electrodynamics'
And in this solution it is given that if there is a changing magnetic field is there there would be induce induce ...
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Internally, what defines whether a material is magnetically hard or soft?
I know that magnetically hard materials hold magnetic fields (magnetic moment alignment) for longer, while soft metals do not. However, what, internally, causes these properties to arise?
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Do transformers return current to source when magnetic field collapse at primary coil?
When we close the circut containing an inductor and a battery, the current starts flowing, which builds magnetic field around inductor, changing magnetic field produces its own current in opposite ...
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Confused between induced emfs
We know when flux of B changes an EMF is induced in loop
And also when a rod moves in mag field Potential difference between its ends is also produced.
So is this ques while writing Potential equation
...
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Mutual inductance - induced magnetic flux in the primary
Let there be two coils, L1 (with self inductance L1), and L2, with self inductance L2.
The first coil is connected to a sinusoidal supply, and the second one is connected to a resistor load, as shown ...
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Torque on a rotating sphere in a uniform magnetic field
Consider a uniform magnetic field. We know that if we have a conductive loop rotating in this magnetic field then we get a current running through that loop due to Faraday's Law, which in turn exerts ...
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Magnetic flux and number of turns
The number of windings is not written in the magnetic flux formulas in high school textbooks, but I come across articles saying that the number of windings affects the magnetic flux formulas. Is this ...
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