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Results tagged with magnetic-fields
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user 46708
For questions that utilize the concept of magnetic fields (commonly denoted by the letter B), or for questions whose answers likely involve magnetic fields. More specific than the [magnetism] tag, as questions about the phenomenon & theory of magnetism do not necessarily involve the discussion of fields.
1
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Is there current flowing through a permanent magnet? And could we apply ampere's law for fin...
CGS wrote in his answer
Thinking of a spinning electron as a small current loop producing a magnetic dipole sometimes aids in visualizing the nature of the phenomenon. But as far as we know, electron …
- 10.8k
1
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Accelerating a Magnetic dipole through a uniform magnetic field
I could give you an answer only for such elementary particles like neutron and electron.
Lorentz force for electrons
From yor question it seems clear that you are familiar with this phenomenon. To g …
- 10.8k
0
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Why does magnetism penetrate all known materials
Since electrons have magnetic dipole moments an external field align this moments and form a magnetic field inside every material.
BTW the saturation of any material happens due to the finite number …
- 10.8k
0
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What is the most efficient shape of magnet?
The strength of a permanent magnet depends firstly from its constituents which are the magnetic dipole moments of the involved subatomic particles. In the same way two bar magnets have a stronger magn …
- 10.8k
2
votes
What causes the difference in magnetic permeability between materials?
Every subatomic particle in atoms has a magnetic dipole moment. Generally, these particles pairwise form closed magnetic loops and do not contribute to a magnetic dipole moment of the atom.
Permanent …
- 10.8k
-1
votes
Would a vibrating bar magnet produce an oscillation in the magnetic field?
An oscillating electric charge produces an oscillating electromagnetic wave.
An electron on the surface of a conductor that is accelerated by an electric field emits photons. An electron in a partic …
- 10.8k
1
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What is that which is magnetic force?
I'm mentally visualizing a water balloon between two magnets. What is the water balloon composed of? Is it purely the "magnetic field"? If so, seems like more work needs to be done.
The interaction …
- 10.8k
1
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Does something change in a magnet when an electron crosses its lines?
An electron can cross the magnetic field of a steady magnet and flip its spin. What changes in the body of the magnet?
In permanent magnets a remarkable part of the subatomic particles is aligned wi …
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0
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Why is the perpendicular velocity of a charge in a homogeneous magnetic field constant?
Since the magnetic field does not contribute any energy to the deflection of the charge, only the kinetic energy of the charge remains. And indeed, the velocity decreases, accompanied by EM radiation …
- 10.8k
-1
votes
Does the ring (in the picture) experience Lorentz force?
First at all think about induction processes.
An electric current in a coil induces a magnetic field. This happens because the electrons in the coil get accelerated in a circle and any acceleration …
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0
votes
Magnetic field lines opposite to actual direction
Some remarks in addition to Farcher's answer.
... some magnetic field lines enter from the north and exit from the south.I don't understand why this is so?
Talking about a magnetic field one has …
- 10.8k
0
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What will happen to a permanent magnet if we keep the same magnetic poles of two magnets clo...
By the way you describe it strong magnets will be produced. Powder from magnetic dipols is pressed together under the influence of a strong magnetic field. But in your case the addhesive forces during …
- 10.8k
0
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Why does one call $B$ the magnetic induction?
The named after Lorentz force $$\vec F = q_e \vec v_e \times \vec B$$ is part of the phenomenon of electromagnetic induction. According to the rules of vector products, the formula is changeable - fo …
- 10.8k
2
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Bar magnet dropped through coil
Why does the s-pole induce an emf in the opposite direction to the one induced by the n-pole when a bar magnet falls through a coil?
I'm sure that a complete description in 'layman terms' is poss …
1
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Where are the poles in a magnetic field generated by a current carrying straight conductor?
Electrons and protons have electric charge, magnetic dipole moment and intrinsic spin. In permanent magnets the magnetic dipole magnets of this particles not equally distributed, their magnetic dipole …
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