All Questions
Tagged with hall-effect electromagnetism
21
questions
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Why force by electric field is appearing?
I want to ask about the Hall effect. Why is the force by the electric field appearing?
I can understand the appearance of the Lorentz force. However, I do not know for what reason the force due to the ...
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Hall voltage vs frame dependent electric field in conductor
The hall voltage is created by a current in a magnetic field.
Similarly, a non current carrying conductor in an electric and magnetic field will appear to have a voltage in a different reverence frame....
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Can one Short a Hall Bar?
Consider a classical Hall bar, no quantum effects. If a magnetic field is applied the standard undergraduate treatment tells us that the Lorentz Force will lead to a build up of excess charge on one ...
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Variation of Current In The Hall Effect Experiment
As a 12th Grader, our class came across a very simple setup of the Hall Effect Experiment during our course on Electromagnetism. The entire idea and eventual steady state conditions all make perfect ...
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Hall Effect on a spiral [closed]
A flat spiral in immersed in a homogeneous magnetic field. An electric current is flowing in the spiral. The directions of the B field, the spiral and the current can be seen in the picture. As the ...
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Why does the presence of magnetoresistive effects indicate the existence of multiple types of charge carriers in a material?
I am currently enrolled in a solid state physics course, and have just completed a lecture on the Hall effect, though it did not go into too much detail. It was mentioned that with van der pauw ...
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Hall effect in a conducting ring
Consider a conducting ring moving through a uniform magnetic field of magnitude $B$, with speed $v$. To visualise, suppose the magnetic field is directed out of the page and the ring is moving ...
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Hall effect for a magnet falling through a copper pipe?
A falling magnet in a copper pipe exerts a Lorentz force on the electrons that participate in the eddy currents a and b. I mean the vertical magnetic force $F = Bqv$, denoted by the blue arrows in the ...
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Hall effect: Do the charges that build up on the sides of conductor kept in uniform magnetic field get uniformly distributed?
When we keep a metal block through which some constant current is flowing in a uniform magnetic field the charges will separate and a potential difference will be created b/w the sides of the ...
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Does a current carrying conductor carry a net total charge or only a net bulk charge?
I would like to start a discussion in which we have an ongoing debate elsewhere with no convincing solution in sight. So I decide to ask here:
The question is mainly academic: Is a current carrying ...
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How to calculate the surface charge density of a conducting plate moving at constant speed in a uniform magnetic Field [closed]
I have conducting plate moving at velocity $v = 6.28\cdot10^5\mathrm m/\mathrm s$ through a uniform magnetic Field of $B = 0.18\mathrm T$. How can I determine the surface charge density?
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The mechanism behind the Lorentz force [duplicate]
It has been known for 130 years that a moving electron entering an external magnetic field is deflected (Lorentz force, Hall effects, synchrotrons). What I have never read is a description of how this ...
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Analogous to hall effect, does electric field applied perpendicular to the current direction through a semiconductor bar create magnetic field?
Hall effect says, when a magnetic field is applied perpendicular to current direction in a semiconductor bar, an electric field (and hence Hall voltage) will be created across the side which is ...
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How to calculate the total charge separated by the Hall effect?
If a plate is undergoing the Hall Effect, how can we calculate the total charge $Q$ present on either side of the plate at the equilibrium state?
And how can we calculate the force that such a charge ...
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Why (intuitively) do more charge carriers result in a smaller Hall effect?
From the equation for the Hall effect:
$$\Delta V_H= \frac{I B}{n q t}$$
[Where $I$ is the current, $B$ the electric field magnitude, $n$ the density of charge carriers, $q$ the charge per charge ...
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