Do stationary electric fields have a magnetic field too?

In summary, a static electric field does not have a magnetic field, and a static magnetic field does not have an electric field. However, a moving charge will always have an electric field, and therefore a magnetic field will always be associated with an electric field. The bar magnet has a stationary magnetic field due to the movement of electrons in its material, but the e-field of the bar magnet is practically zero due to the cancellation of e-fields from electrons and protons. In the quantum scenario, an electron's movement around the nucleus and its spin on its own axis create two different magnetic fields, which combine to give rise to the magnetic field of a bar magnet.
  • #1
jlyu002@ucr.e
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I know that a magnetic field will have an electric field bc there is charges, and they are moving.

Thanks physicsforums!
 
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  • #2
A static [not changing with respect to time] electric field does not have a magnetic field. Similarly, a static magnetic field does not have an electric field.
 
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  • #3
How can there be a static magnetic field when it is due to a moving charge. A charge will always have an electric field. Therefore, I think that the magnetic field will always be associated with an electric field, but an electric field will depend if the source charge is moving. Any thoughts on my analysis Chronos?
 
  • #4
Think how a bar magnet has a stationary magnetic field due to electrons moving in its material.
 
  • #5
Will this mean that the bar magnet also has an efield due to the electrons? And thus, will the direction of E field be radially moving inwards, and the magnetic field will be moving around north and south?
 
  • #6
jlyu002@ucr.e said:
Will this mean that the bar magnet also has an efield due to the electrons? And thus, will the direction of E field be radially moving inwards, and the magnetic field will be moving around north and south?

The e-field of the bar magnet is practically zero because the e-field due to electrons is practically canceled by the e-field due to protons which are equally and positevely charged.
 
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  • #7
Ahhh thanks that makes sense!
 
  • #8
What is the Quantum Scenario of these phenomenon.Because in classical sense an electron while circling around nucleus as well as due to spin on its own axis will create two different magnetic fields.Alignment of the first type according to a theory gives rise to fields combining to give field of bar magnet.
 

1. Do stationary electric fields have a magnetic field too?

Yes, according to Maxwell's equations, a stationary electric field will always produce a perpendicular magnetic field.

2. How are electric and magnetic fields related?

Electric and magnetic fields are interconnected through Maxwell's equations, which describe the behavior of electromagnetic fields.

3. Can a magnetic field exist without an electric field?

No, according to Maxwell's equations, a magnetic field cannot exist without an electric field. They are always produced together and are fundamentally interconnected.

4. How do stationary electric fields and magnetic fields interact with each other?

Stationary electric fields and magnetic fields can interact with each other through a phenomenon called electromagnetic induction, where a changing magnetic field can induce an electric field and vice versa.

5. Can stationary electric fields and magnetic fields be separated?

No, since stationary electric fields and magnetic fields are fundamentally interconnected, they cannot be separated. Any change in one will always affect the other.

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