- What is H in magnetic field?
- How can you detect a magnetic field?
- What is the weakest part of a magnetic field?
- How magnetic field is created?
- Is a refrigerator magnet a permanent magnet?
- How can two magnets demonstrate magnetic force?
- Where is the field the strongest?
- Why is magnet strongest at its pole?
- Where is the magnetic field the strongest and why?
- Which magnetic field has the strongest magnetic field?
- Can you block a magnetic field?
- Which magnet is the strongest?
- Why can’t magnetic field lines cross?
- Can we use the Earth’s magnetic field to generate electricity?
- How can you tell where the magnetic field is strongest?
- Do magnetic fields exist?
- At which point is the magnetic field strength greatest?
- Where is the magnetic flux density greatest?
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.
How can you detect a magnetic field?
Magnetic field lines can also be detected using a magnetic compass.A compass contains a small bar magnet on a pivot so that it can rotate.The compass needle points in the direction of the Earth’s magnetic field, or the magnetic field of a magnet.Magnetic fields can be mapped out using small plotting compasses:More items…
What is the weakest part of a magnetic field?
The magnetic field is weakest along the surface in the middle of the side of the magnet. This is a close-up of the field at the North pole.
How magnetic field is created?
Magnetic fields are produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin.
Is a refrigerator magnet a permanent magnet?
Refrigerator magnets are usually made from materials that are ferrimagnetic. Similarly, refrigerator magnets are made of a material that is permanently magnetized – they don’t use an electric current to generate a magnetic field.
How can two magnets demonstrate magnetic force?
If you placed the two magnets so that opposite poles are facing each other, the force will be attractive and you will need to add more mass to the opposite side of the scale. If the facing poles are the same, the force is repulsive and acts against gravity.
Where is the field the strongest?
Where the field lines are close together the field is strongest; where the field lines are far apart the field is weakest. If the lines are uniformly-spaced and parallel, the field is uniform.
Why is magnet strongest at its pole?
Magnetic field is stronger at poles because magnetic field lines are very close to each other near the poles. In other words , near the poles magnetic flux density is maximum because of which magnetic field is stronger at that position.
Where is the magnetic field the strongest and why?
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. the arrowheads point from the north pole of the magnet to its south pole.
Which magnetic field has the strongest magnetic field?
The magnetic field generated by any magnet is always strongest at either pole. The magnetic force is equally as strong at both the north and south 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.
Which magnet is the strongest?
neodymiumThe strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd2Fe14B structure.
Why can’t magnetic field lines cross?
TWO MAGNETIC FIELD LINES CANNOT INTERSECT EACH OTHER BECAUSE IF THEY INTERSECT THEN THERE SHOULD BE TWO TANGENTS AT A POINT , WHICH REPRESENTS TWO DIRECTION OF MAGNETIC FIELD AT A POINT , AND IT IS NOT POSSIBLE. … Because that would imply that the magnetic field has two different directions at the same point.
Can we use the Earth’s magnetic field to generate electricity?
Earth’s magnetic field is very weak, so you would get very little current from your generator. … They have magnetic fields around 6,000 times stronger than Earth’s magnetic field. Magnetic fields inside electrical generators are similar to this.
How can you tell where the magnetic field is strongest?
The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
Do magnetic fields exist?
However, purely magnetic fields do exist. Therefore, magnetic fields are more than just relativistic electric fields. The correct statement is that electric fields and magnetic fields are both fundamental, both are real, and both are part of one unified entity: the electromagnetic field.
At which point is the magnetic field strength greatest?
Inside the magnet itself, the field lines run from the south pole to the north pole. The magnetic field is strongest in areas of greatest density of magnetic field lines, or areas of the greatest magnetic flux density.
Where is the magnetic flux density greatest?
As shown above, the magnetic field is strongest near to the poles of the magnet were the lines of flux are more closely spaced. The general direction for the magnetic flux flow is from the North ( N ) to the South ( S ) pole.