ANSWElizabethR: Yardsagnetic flux are well-defined: ?

03 Jul ANSWElizabethR: Yardsagnetic flux are 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: Carry out long lasting magnets possess a digital most recent nearby them? Long lasting magnets appears to have additional qualities to help you electromagnets, in a manner that electromagnets can be used for induction and effort import if a good conductor is placed within their changing magnetized industry. Thus i just remember that , a keen electromagnet are certain to get an altering magnetized field, which in turn stimulates a changing electricity current for the an excellent conductor place contained in this magnetized profession. My personal question is, would permamant magnets make which same electric energy when the a beneficial conductor is positioned in their magnetized job? We.e. if i got an effective long lasting magnet, perform I have the ability to create a recently available inside good coil if it are produced to the permananet magnet’s magnetic community?

You could potentially ask an identical matter regarding electric 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 J_b and bound surface current density K_b. If the magnetization of the material is M, you can write J_b=curlM and K_b=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, Tattoo dating services for example, will induce a current in the ring.

QUESTION: What makes the new guidelines off magnetic profession outlines outside the magnet of northern in order to South rather than Southern area so you’re able to Northern? Will it be a discussion or has got a reasoning trailing they?

ANSWER: A permanent magnet are thought of as which have “bound” currents

ANSWER: It’s just once the arbitrary because the if an effective electrons is bad otherwise confident or whether an electronic industry facts with the otherwise aside of a negative charge. For people who find the more guidance of traditional, you would need to have fun with a left hand code to determine the brand new push into an optimistic charges swinging because of a charismatic field.