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gvntr52
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The magnetic field lines emerge from the north poles to south poles.Why its always true this event? i expect your answers please... 
A magnetic field is a region in space where magnetic forces are exerted on charged particles, such as electrons or protons. It is created by moving electric charges or by the intrinsic magnetic properties of certain materials.
A magnetic field is created by the movement of electric charges. This can be achieved through the flow of electric current in a wire or through the spinning of electrons in an atom.
While both magnetic and electric fields are forms of electromagnetic radiation, they have different properties. Electric fields are created by stationary electric charges, while magnetic fields are created by moving electric charges. Additionally, electric fields exert forces on both charged and uncharged particles, while magnetic fields only exert forces on charged particles.
The unit of measurement for magnetic fields is the tesla (T), named after the famous scientist Nikola Tesla. Another commonly used unit is the gauss (G), with 1 T equal to 10,000 G.
Magnetic fields have a variety of applications in everyday life, including in compasses for navigation, generators for producing electricity, and magnetic resonance imaging (MRI) machines for medical imaging. They are also used in many electronic devices, such as speakers, motors, and hard drives.