ANSWElizabethR: Magnetized flux is actually well-defined: ?
M???B·dA, the area integral of the magnetic field. If the integral is over a closed surface, the flux is zero; this is the famous situation which tells you that there are no point sources (called magnetic monopoles) of magnetic fields like there are for electric fields. If you like, you may interpret this as a number, but that is not really fundamental. If you talk about uniform magnetic fields which are perpendicular to a plane surface, ?M=BA , is the flux through an area A. Then, if you interpret ?M as a number, you would simply say, for example, there were 10 lines through an area of 1 m 2 if the magnetic field is 10 T. E???E · dA . This is perhaps a little easier to understand because you can have point charges. For example, if you have a 1 C point charge, the electric field 1 m from it is E=Q/(4 ??0r 2 )=1/(4×3.14×8.85×10 -12 x1 2 )=9.27×10 9 N/C. The flux at a distance of 1 m from the charge would therefore be ?E =EA= 9.27×10 9 x4x3.14x 1 2 =1.17×10 11 Nm 2 /C. Incidentally, this is the flux regardless of where you measure it because the area of the sphere (4 ?r 2 ) surrounding the point charge appears both in the denominator of the field and in the numerator of the flux and cancels. Hence, you could say that there were 1.17×10 11 lines of electric field emanating from a 1 C point charge. You can see this from Gauss’s law, ?E=??E · dA=Q/?0 if the integration is over a closed surface enclosing the charge Q.
QUESTION: Would long lasting magnets possess a digital newest close her or him? Permanent magnets seems to have other properties to help you electromagnets, in a way that electromagnets can be used for induction and energy transfer in the event that a conductor is positioned in their switching magnetized career. And so i understand that an electromagnet can get a changing magnetic occupation, which generates a modifying electricity latest when you look at the a beneficial conductor placed inside magnetized community. My question is, perform permamant magnets build it same household 
current if a good conductor is placed within their magnetized community? I.e. if i had a powerful long lasting magnet, perform I manage to make a recently available in an excellent coil whether or not it are brought for the permananet magnet’s magnetized field?
You might ask the same question throughout the digital flux, ?
These are not currents you could actually connect an ammeter to and measure. If you are interested, there are, in general, two types of bound current, bound volume current density Jb and bound surface current density Kb. If the magnetization of the material is M, you can write Jb=curlM and Kb=Mxn where n is a unit vector normal to the surface and pointing out of the volume. I do not understand any of your rambling about induction. I will simply say that any changing magnetic field can induce currents and a permanent magnet is a source of a magnetic field; moving that magnet, through a wire ring, for example, will induce a current in the ring.
QUESTION: Why is the fresh new assistance away from magnetic profession traces beyond your magnetic out of north so you’re able to Southern area rather than South so you’re able to Northern? Could it be a discussion or has got a reason behind they?
ANSWER: A permanent magnet is regarded as which have «bound» currents
ANSWER: It is merely since haphazard while the if a electrons was negative otherwise self-confident or whether an electric industry situations towards the or out out of an awful fees. For people who chose the various other recommendations regarding traditional, you would have to fool around with a left hand code to determine new force toward an optimistic charge moving thanks to a charismatic community.