All Questions
6
questions
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34
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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?
- 185
0
votes
1
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242
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Electron in varying magnetic field
Lets consider an electron that is placed in an existing, constant in space near the electron, magnetic field. Electron is stationary. Magnetic field over time gradually reduces to zero.
I assume ...
- 1,106
0
votes
2
answers
345
views
Solenoid and induced electric fields
Let us suppose there is a solenoid which has $n$ turns per unit length the current is varying with time as $I =kt$ where k is a constant if the current is flowing then there must be induced electric ...
- 163
1
vote
1
answer
875
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Why is there an emf induced across the width of a metal sheet when it is moved across a uniform magnetic field?
By Faraday's law, the flux is constant, so there will be no emf. But each electron in the metal sheet is moved at some speed, so it will experience a force, and as a result, electrons will accumulate ...
- 254
1
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2
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137
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When atoms "move", do their electrons generate a net magnetic field relative to the motion?
It seems to me that the atoms the make up all the matter on Earth, are always in motion. The Earth rotates and it revolves around the sun. It also revolves around the Galactic center. And, we are ...
- 111
-1
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1
answer
129
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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 ...
- 10.6k