- The source of the earths magnetic field occurs in the liquid outer core caused by electric currents.
Aug 12, 2009 · The magnetic poles are two such points on the Earth ’s surface ; see Fig. 30 - 6 . Thus , 3 7 2 22 2 A A m m T G ( ) 6 37 10 6 20 10 0 62 N 8 10 5 B R = = × F H I K × ⋅ × = × = - - μ π μ 0 6 3 2 2 10 ( . ) . . . E ( The main component of the Earth ’s magnetic field is a dipole .
Oct 19, 2010 · Problem 5. Suppose Earth’s magnetic field arose from a single loop of current at the outer edge of the planet’s liquid core (core radius 3000 km), concentric with Earth’s center. What current would be necessary to give the observed field strength of 62 T m at the north pole? (The currents responsible for Earth’s field are more complicated than this problem suggests.)
View Lab HW.pdf from CORE-UA 312 at New York University. 5. The magnetic domains in oceanic rocks recorded reversal of Earth's magnetic field over time.
Sources of the Earth's magnetic field: GFZ. The dominant main field originates in the Earth's fluid core. The second internal contribution comes from magnetized rocks in the lithosphere. The third contribution, varying rapidly in time, comes from outside the Earth (External field).
The magnetic field of the earth is thought to arise due to electrical currents produced by convective motion of metallic fluids (consisting mostly of molten iron & nickel) in the outer core of the earth.Dec 13, 2016
The three main sources to produce a magnetic field are: Electromagnet permanent magnet Current-carrying conductor.Electromagnet.permanent magnet.Current-carrying conductor.
An electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines circling a wire. Permanent magnets are the most common sources of the magnetic field.
The Earth's magnetic field is believed to be generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core.
There are three components that are responsible for the magnitude as well as the direction of the earth's magnetic field:Magnetic declination.Magnetic inclination or the angle of dip.Horizontal component of the earth's magnetic field.Sep 29, 2020
Electric and magnetic fields are produced in our homes by the electrical appliances we use, the household electrical wiring, and the power lines and substations outside the home. Electric and magnetic fields are also produced from the use of electricity in the workplace and by electric transport.Jul 2, 2013
They are generated by natural phenomena like the Earth's magnetic field but also by human activities, mainly through the use of electricity. Mobile phones, power lines and computer screens are examples of equipment that generates electromagnetic fields.
The first hypotheses is that the field of a bar magnet is produced by solenoid-like currents which flow around the outside of the magnet, in an anti-clockwise direction as we look along the magnet from its north to its south pole.