What is the simple definition of magnetic field?
What is the simple definition of magnetic field?
Definition of magnetic field : the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.
What is called by magnetic field?
Around a permanent magnet or a wire carrying a steady electric current in one direction, the magnetic field is stationary and referred to as a magnetostatic field. At any given point its magnitude and direction remain the same.
What is the magnetic field and how is it formed?
All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.
What is a magnetic field and what is its source?
What is a magnetic field, and what is its source? A magnetic field is a force that is exerted from magnets. Its source comes from movement of charged particles. Every spinning electron is a tiny magnet.
Where is the magnetic field?
Earth’s magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field S pole near the Earth’s geographic north pole (see Magnetic North Pole) and the other magnetic field N pole near the Earth’s geographic south pole (see Magnetic South Pole).
What causes magnetic field on Earth?
Scientists know that today the Earth’s magnetic field is powered by the solidification of the planet’s liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.
How magnetic field is produced in Earth?
The Earth’s outer core is in a state of turbulent convection as the result of radioactive heating and chemical differentiation. This sets up a process that is a bit like a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy.
Where is the Earth magnetic field?
fluid outer core
The Earth’s magnetic field is generated in the fluid outer core by a self-exciting dynamo process. Electrical currents flowing in the slowly moving molten iron generate the magnetic field.
What would happen if Earth didn’t have a magnetic field?
If Earth’s magnetic field disappeared, the entire human race – and all of life, in fact – would be in serious danger. Cosmic rays would bombard our bodies and could even damage our DNA, increasing worldwide risk of cancer and other illnesses.
What are the properties of magnetic field?
Magnetic field lines appear to emerge or start from the north pole and merge or terminate at the south pole. Inside the magnet, the direction of the magnetic field lines is from the south pole to the north pole. Magnetic field lines never intersect with each other. Magnetic field lines form a closed-loop.
What generates Earth’s magnetic field?
Generated by the motion of molten iron in Earth’s core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun.
How is magnetic field created?
Magnetic fields are produced by moving electric charges. Everything is made up of atoms, and each atom has a nucleus made of neutrons and protons with electrons that orbit around the nucleus. Since the orbiting electrons ≠are tiny moving charges, a small magnetic field is created around each atom.
Why magnetic field is important?
Generated by the motion of molten iron in Earth’s core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun. It also provides the basis for navigation with a compass.