Re: VRD - flux, conductors, currents

Hello Neelabh: I have only a fragmented question from you "what will happen
(to the flux produced and to the conductor)> > if the rate of change of 
current tends to infinity." I will do my best to answer it. If I 
misunderstood it, write back to the MadSci Network.

An electromagnetic field is induced by the current flow in a conductor. I 
assume that if the current through the wire increases to infinity, so will 
the electromagnetic field. Now let us first look at the history of 
electromagnetic field discoveries:

In the late 18th and early 19th centuries, the theories of electricity and 
magnetism were investigated simultaneously. In 1819 the Danish physicist 
Hans Christian Oersted made an important discovery. He found that an 
electric current flowing through a wire could deflect a magnetic needle. 
This discovery showed a connection between electricity and magnetism, and 
was followed up by the French scientist Andr‚ Marie AmpŠre, who studied 
the forces between wires carrying electric currents. Later the French 
physicist Dominique Fran Lois Jean Arago, magnetized a piece of iron by 
placing it near a current-carrying wire. In 1831 the English scientist 
Michael Faraday discovered that moving a magnet near a wire induces an 
electric current in that wire, or the inverse effect to that found by 
Oersted. Oersted showed that an electric current creates a magnetic field, 
and Faraday showed that a magnetic field could be used to create an 
electric current.

The English physicist James Clerk Maxwell, who predicted the existence of 
electromagnetic waves and identified light as an electromagnetic 
phenomenon, achieved the full unification of the theories of electricity 
and magnetism. The magnetic field about a current-carrying conductor can 
be visualized as spreading radially outward from the conductor in the same 
manner as ripples created when a stone is dropped into water. The 
direction of the magnetic lines of force in the field is counterclockwise 
when observed in the direction in which the electrons are moving (right 
hand rule). The field is stationary about the conductor so long as the 
current is flowing steadily through the conductor. Look up on the Internet:

 britannica: electromagnetism
 treasure-troves: Maxwell's equations

Today our physicists are exploring electromagnetism even further, at the 
subatomic level. Here is a good site to visit concerning sub-atomic 
physics:
 ParticleAdventure

Your MAD.SCI Micro.