Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
Why are the magnetic field lines closed?
Since the direction of magnetic field line is the direction of force on a north pole. So the magnetic lines always begin from the ‘N’ pole of the magnet and end on the ‘S’ pole of the magnet. … Thus the magnetic field lines are closed.
Do magnetic field lines always go from north to south?
Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole. Therefore, the magnetic field lines of the earth run from the southern geographic hemisphere towards the northern geographic hemisphere.
At what place of the magnet are the magnetic field lines closer?
Answer. The magnetic force or attraction is is greater where the field lines are crowded. Since all the magnetic field lines generate from the poles, the crowd of field lines is maximum near pole.
Do the field lines begin at the pole face group of answer choices?
North Question 2 0.5 / 0.5 pts Do the field lines really start at the pole face? Yes Correct! … In the figures below, the earth is shown with the northern hemisphere on top, its core magnet is illustrated by the overlaid bar magnet, and a compass is illustrated as a diamond with a black tip at its magnetic north end.
Where is the magnetic field the strongest?
The magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.
Which property of the magnetic field lines is wrong?
Solution : (a) Wrong, because magnetic lines of force never emanate from a single point as shown. The field lines shown represent electric field of a single positive charge.
Is North positive or negative?
When magnets are used in magnetic therapy, the poles are often referred to as being positive or negative. Generally, the south pole is termed positive, and the north negative.
Can you direct a magnetic field?
Yes, it is possible to guide magnetic field lines using a shaped magnetic material. Just as field lines concentrate when entering the south pole of a magnet from a large area, an external magnetic field can be “gathered” using, for example, a cone-shaped piece of iron.
How can you tell how strong a magnetic field is?
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.
How magnetic field is created?
Any current (movement of electrical charge) will create a magnetic field. Certain materials are capable of realigning the angular momentum of their electrons, and iron is one of them. When the angular momentum of electrons gets aligned, an external magnetic field is created.
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.19 мая 2019 г.
What causes a magnetic field?
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. The piece of iron has become a magnet. Some substances can be magnetized by an electric current.
What do magnetic field lines look like when two magnets attract?
If you have two magnets next to each other and their north poles are facing each other or their south poles are facing each other, you can see that the field lines move away from each other, so you feel a repelling force between the two magnets.
Which is stronger of the two electric field or magnetic field?
The way in which charges and currents interact with the electromagnetic field is described by Maxwell’s equations and the Lorentz force law. The force created by the electric field is much stronger than the force created by the magnetic field.
How do you draw a magnetic field around a bar magnet?
What you’ll do: Place the bar magnet in the middle of the paper. Trace the outline of the magnet – that way you can put it back in the exact same spot if it gets bumped. Place the compass at one pole of the magnet and make a dot next to it showing the direction the compass arrow points.