- Where do magnetic fields come from?
- What is the difference between magnetic flux and magnetic field?
- How a magnetic field is created?
- What is the strongest magnetic material?
- What is difference between B and H?
- What is magnetic flux Class 12?
- What does flux mean?
- Why do magnetic fields exist?
- What is magnetic flux class 10th?
- What is a magnetic field made of?
- Where is Earth’s magnetic field the weakest?
- Why do we have a magnetic field?
- What is Faraday’s law formula?
- What is the symbol of flux?
- What is meant by magnetic flux?
- Where is a magnetic field strongest?
- Can you block a magnetic field?
- What is H in magnetic field?
Where do magnetic fields come from?
In a permanent magnet, the magnetic field comes from the motion of the electrons inside the material, or, more precisely, from something called the electron spin.
The electron spin is a bit like the Earth spinning on its axis.
The magnetic field is a vector, the same way the electric field is..
What is the difference between magnetic flux and magnetic field?
The most significant difference between the magnetic field and the magnetic flux is that the magnetic field is the region around the magnet where the moving charge experiences a force, whereas the magnetic flux shows the quantity or strength of magnetic lines produced by the magnet.
How a magnetic field is created?
Magnetic field due to moving charges and electric currents All moving charged particles produce magnetic fields. Moving point charges, such as electrons, produce complicated but well known magnetic fields that depend on the charge, velocity, and acceleration of the particles.
What is the strongest magnetic material?
neodymium magnetsDeveloped independently in 1984 by General Motors and Sumitomo Special Metals, neodymium magnets are the strongest type of permanent magnet available commercially.
What is difference between B and H?
B field is dependent to a considerable extent on currents, both microscopic and macroscopic while the H field depends on microscopic currents. B field lines always form loops around the total current. In the case of H field the lines always loops around free current. They begin and end near magnetic poles.
What is magnetic flux Class 12?
Magnetic flux is defined as the product of the average magnetic field times the perpendicular area it penetrates. … Area vector is considered as the amount of lines crossing an area also varies with the orientation of the area. It is a scalar quantity. Magnetic flux is denoted by ΦB or Φ.
What does flux mean?
The noun flux describes something that constantly changes. If your likes, dislikes, attitudes, dreams, and even friends are changing all the time, you may be in flux. Flux can also mean being unsure about a decision.
Why do magnetic fields exist?
Magnetic fields occur whenever charge is in motion. As more charge is put in more motion, the strength of a magnetic field increases. Magnetism and magnetic fields are one aspect of the electromagnetic force, one of the four fundamental forces of nature.
What is magnetic flux class 10th?
Magnetic flux refers to the total number of magnetic field lines penetrating any surface placed perpendicular to the magnetic field. It is calculated as the product of the average magnetic field strength and the perpendicular area it penetrates.
What is a magnetic field made of?
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.
Where is Earth’s magnetic field the weakest?
equatorThe intensity of the magnetic field is greatest near the magnetic poles where it is vertical. The intensity of the field is weakest near the equator where it is horizontal. The magnetic field’s intensity is measured in gauss. The magnetic field has decreased in strength through recent years.
Why do we have a magnetic field?
If you have a rotating electric current, it will create a magnetic field. On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
What is Faraday’s law formula?
The equation for the EMF induced by a change in magnetic flux is. EMF=−NΔΦΔt EMF = − N Δ Φ Δ t . This relationship is known as Faraday’s law of induction. The units for EMF are volts, as is usual.
What is the symbol of flux?
Magnetic Flux Symbol Magnetic flux is commonly denoted using Greek letter Phi or Phi suffix B. Magnetic flux symbol: Φ or ΦB.
What is meant by magnetic flux?
Magnetic flux is a measurement of the total magnetic field which passes through a given area. … The angle at which the field line intersects the area is also important. A field line passing through at a glancing angle will only contribute a small component of the field to the magnetic flux.
Where is a magnetic field strongest?
the closer the lines, the stronger the magnetic field (so the magnetic field from a bar magnet is strongest closest to the poles) the lines have arrowheads to show the direction of the force exerted by a magnetic north pole.
Can you block a magnetic field?
There is no known material that blocks magnetic fields without itself being attracted to the magnetic force. Magnetic fields can only be redirected, not created or removed. To do this, high-permeability shielding alloys are used. The magnetic field lines are strongly attracted into the shielding material.
What is H in magnetic field?
The definition of H is H = B/μ − M, where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. …