The size of a magnetic field is typically described by its strength, which is measured in units of tesla (T) or gauss (G). Earth's magnetic field at its surface is around 0.25 - 0.65 gauss, while the strength of magnets can range from a few millitesla to several tesla depending on the type and design of the magnet.
If magnetic lines are close, then the magnetic field has a lot of magnetic lines of force packed together. This translates into a large number of flux lines per unit of area through which they're passing. A large number of flux lines per unit area means a high field density. High flux density means the magnetic field is strong compared to a field where the flux lines are not as close together.
A Magnetic Force
The extent of a magnetic field depends on the strength of the magnet producing the field. In general, the magnetic field of a permanent magnet extends a few times the physical size of the magnet. For electromagnets or large magnets, the field can extend several meters.
Magnetic field lines are closest together at the poles of a magnet, where the magnetic field is strongest. This is where the magnetic force is most concentrated.
Magnetic field lines show the direction of the magnetic field, the magnitude of the magnetic field (closeness of the lines), and the shape of the magnetic field around a magnet or current-carrying wire.
Mercury is the planet that has craters, cliffs, and a weak magnetic field. Its surface is heavily cratered, and there are large cliffs called scarps. Mercury's magnetic field is about 1% as strong as Earth's magnetic field.
A magnet contains a large number of magnetic domains, not poles. Magnetic poles refer to the ends of a magnet where the magnetic field is strongest, while magnetic domains are regions within the magnet where the magnetic moments of atoms are aligned in a certain direction to contribute to the overall magnetic field of the magnet.
If magnetic lines are close, then the magnetic field has a lot of magnetic lines of force packed together. This translates into a large number of flux lines per unit of area through which they're passing. A large number of flux lines per unit area means a high field density. High flux density means the magnetic field is strong compared to a field where the flux lines are not as close together.
A Magnetic Force
The small bar magnet has a stronger magnetic field, at least at short distances.
Magnetic freild
No. The magnetic field is produced by currents in Earth's outer core, which is composed largely of molten iron.
All electrical circuits produce a magnetic field around the wires when a current is travelling. If we want to generate a large field, we can coil the wire. Such a coil is called a solenoid.
The extent of a magnetic field depends on the strength of the magnet producing the field. In general, the magnetic field of a permanent magnet extends a few times the physical size of the magnet. For electromagnets or large magnets, the field can extend several meters.
No, magnetic field lines close together indicate a stronger magnetic field, while magnetic field lines farther apart indicate a weaker magnetic field. The density of field lines represents the strength of the magnetic field in that region.
All electrical circuits produce a magnetic field around the wires when a current is travelling. If we want to generate a large field, we can coil the wire. Such a coil is called a solenoid.
Magnetic field lines are closest together at the poles of a magnet, where the magnetic field is strongest. This is where the magnetic force is most concentrated.