question on charged particals

Any charged particle that's undergoing an acceleration will produce a magnetic field. An electron is charged and is the main cause of the classical electric current that we use in electronic (therefore the name ELECTRONic) and electricity.

Yes, it is.

Yes, refer to the Maxwell equations. The mu and epsilon coefficients (respectively magnetic susceptibility and dielectrical constant) vary with the considered conductor.

Pure water contains ions (H+ and OH-, those responsible for acidity and alkalinity) but in very low concentration (10^-7 mol per liter).

I think it would but I have no idea the intensity of that field.

Any charged particle that is moving represents an electric current and creates a magnetic field. Acceleration isn't necessary.

Wrong order - the name elecron was invented long after the concept of electricity had been established.

The right answer is "it can be"

In fact, most conductors are like copper and aluminium and the same current generates pretty much exactly the same magnetic field.

A few conducting materials - incluidng iron - are ferromagnetic which complicates the situaton.

Water is not ferromagnetic, so the intensity of the field generated is very close to the intensity of the magnetic field generated by the same current flowing through any other non-ferromagnetic conductor.

What makes you think the written order was meant to be the chronological order in my sentence ?

" An electron is charged and is the main cause of the classical electric current that we use in electronic (therefore the name ELECTRONic) and electricity. "

What makes you think that your sentence exhibited any kind of order? Come to think of it, what makes you think that you know enough about electronics and physics to advise other people on the subject?

Maybe my diplomas ? This whole thread makes me think you're full of yourself to the point you need to give precisions to an helpful post (mine, I think), following a reasonable question, precisions that are formulated in a very rude and condescending way. If you don't like the concept of newsgroup, I suggest you get yourself an empty soapbox and preach to the passersby.

The sole purpose of a Usenet newsgroup is to gang bang the cripples.

But Dr Gang Bang is French. Yecccch ;-)

...Jim Thompson

Which is what those French Veternarians call a "four paw".

Yes it does, in direct correspondence to the mu and epsilon coefficients. Moreover, magnetic fields in (partially) conductive fluids are used to induce voltages to measure fluid velocity in as variety of circumstances.