- What do magnetic field lines look like when two magnets attract?
- Why do same pole magnets repel?
- Is Earth a permanent magnet?
- What is the most magnetic material in nature?
- What are lines of magnetic flux?
- How do you show magnetic field lines?
- Where is a magnetic field strongest?
- What is magnetic flux and its formula?
- Where is the magnetic field the weakest?
- What is the strongest magnetic material?
- At what pole do magnetic field lines start?
- Do magnets have 2 poles?
- What is magnetic flux made of?
- Why do magnetic poles always occur in pairs?
- Why do magnetic fields have lines?
What do magnetic field lines look like when two magnets attract?
Another way to visualize magnetic field lines is to sprinkle iron filings around a magnet, as shown at right.
When two magnets are brought close together, the magnetic field lines are perturbed, just as happens for electric field lines when two electric charges are brought together..
Why do same pole magnets repel?
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.
Is Earth a permanent magnet?
The crust of the Earth has some permanent magnetization, and the Earth’s core generates its own magnetic field, sustaining the main part of the field we measure at the surface. … So we could say that the Earth is, therefore, a “magnet.”
What is the most magnetic material in nature?
mineral magnetiteThe most magnetic material in nature is the mineral magnetite, also called lodestone (see Figure below). The magnetic domains of magnetite naturally align with Earth’s axis.
What are lines of magnetic flux?
The lines which go to make up a magnetic field showing the direction and intensity are called Lines of Force or more commonly “Magnetic Flux” and are given the Greek symbol, Phi ( Φ ) as shown below.
How do you show magnetic field lines?
Magnetic fieldsplace the plotting compass near the magnet on a piece of paper.mark the direction the compass needle points.move the plotting compass to many different positions in the magnetic field, marking the needle direction each time.join the points to show the field lines.
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.
What is magnetic flux and its formula?
The magnetic flux (often denoted Φ or ΦB) through a surface is the component of the magnetic field passing through that surface. In the most general form, magnetic flux is defined as ΦB=∬AB⋅dA Φ B = ∬ A B ⋅ d A . It is the integral (sum) of all of the magnetic field passing through infinitesimal area elements dA.
Where is the magnetic field the weakest?
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.
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.
At what pole do magnetic field lines start?
north poleMagnetic field lines can never cross, meaning that the field is unique at any point in space. Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
Do magnets have 2 poles?
Every magnet has two sides: a north pole and a south pole. We use these names because if you hang a magnet from a thread, the magnet’s north pole points (almost) towards the north direction. … Your little, strong magnet lines up with Earth’s magnetic core, so it points north. That’s how a magnetic compass works.
What is magnetic flux made of?
Magnetic flux is what generates the field around a magnetic material. It consists of photons, however, unlike the light we receive from the Sun, it is at a much lower frequency. (1) This is why magnetic field lines are not visible to the naked eye.
Why do magnetic poles always occur in pairs?
Magnetism is produced by electric current. A magnet will always have a pair of poles, a north and a south because magnetic field lines are continuous and always form closed loops. Each magnetic field line is directed from the north pole to it’s south pole.
Why do magnetic fields have lines?
By convention, the lines trace the force from the north to south pole of a magnet. The distance between the lines indicates relative strength of the magnetic field. The closer the lines are, the stronger the magnetic field is.