we cannot have 1.an isolated charge 2.an atom 3.a molecule 4.an isolated magnetic charge
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Answer:
where is the question??
Explanation:
i think it is not a question
Answer:
Maxwell's equations
Maxwell's equations of electromagnetism relate the electric and magnetic fields to each other and to the motions of electric charges. The standard equations provide for electric charges, but they posit no magnetic charges. Except for this difference, the equations are symmetric under the interchange of the electric and magnetic fields.[notes 1] Maxwell's equations are symmetric when the charge and electric current density are zero everywhere, which is the case in vaccuum.
Fully symmetric Maxwell's equations can also be written if one allows for the possibility of "magnetic charges" analogous to electric charges.[citation needed] With the inclusion of a variable for the density of these magnetic charges, say ρm, there is also a "magnetic current density" variable in the equations, jm.
If magnetic charges do not exist – or if they do exist but are not present in a region of space – then the new terms in Maxwell's equations are all zero, and the extended equations reduce to the conventional equations of electromagnetism such as ∇⋅B = 0 (where ∇⋅ is divergence and B is the magnetic B field).
Left: Fields due to stationary electric and magnetic monopoles.
Right: In motion (velocity v), an electric charge induces a B field while a magnetic charge induces an E field. Conventional current is used.
Top: E field due to an electric dipole moment d.
Bottom left: B field due to a mathematical magnetic dipole m formed by two magnetic monopoles.
Bottom right: B field due to a natural magnetic dipole moment m found in ordinary matter (not from magnetic monopoles). (There should not be red and blue circles in the bottom right image.)
The E fields and B fields are due to electric charges (black/white) and magnetic poles
Explanation:
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