L> Magnets and Electromagnets
Bar Magnet

The lines of magnetic field from a bar magnetdevelop closed lines.By convention, thefield direction istaken to be external from theNorth pole and right into the South poleof the magnet. Permanent magnets have the right to be made from ferromagnetic products. As have the right to be visualized through the magnetic field lines, the magnetic field is strongest inside the magnetic material. The strongest external magnetic areas are close to the poles. A magnetic north pole will lure the south pole of an additional magnet, and also repel a north pole.

*
*
The magnetic area lines of a bar magnet deserve to be traced out via the use of a compass. The needle of a compass is itself a irreversible magnet and the north indicator of the compass is a magnetic north pole. The north pole of a magnet will certainly tfinish to line up via the magnetic field, so a suspended compas needle will turn until it lines up through the magnetic field. Unprefer magnetic poles attract, so the north indicator of the compass will allude toward the south pole of a magnet. In response to the Earth"s magnetic area, the compass will certainly allude toward the geographic North Pole of the Planet because it is in fact a magnetic south pole. The magnetic field lines of the Earth enter the Planet close to the geographic North Pole.

Compariboy of magnetic and electrical fieldsCompare to solenoid magnetic field
IndexMagnetic field concepts
slrfc.org***** Electricity and Magnetism R Nave
Go BackElectric and also Magnetic Sources
The electric field of a point charge is radially external from a positive charge.

You are watching: The location of the strongest magnetic forces is the

The magnetic field of a bar magnet.
*
*
Electric resources are naturally "monopole" or point charge resources.Magnetic resources are inherently dipole sources - you can not isolate North or South "monopoles".
IndexMagnetic forceMagnetic area concepts
slrfc.org***** Electricity and also Magnetism R Nave
Go BackBar Magnet and also Solenoid

The magnetic field created by electrical present in a solenoid coil is comparable to that of a bar magnet.

*

The magnetic area lines deserve to be assumed of as a map representing the magnetic influence of the source object in the area surrounding it. The properties of the magnetic field lines are have the right to be summarized by:The direction of the magnetic field is tangent to the magnetic field line at any kind of allude in area.The stamina of the magnetic field is visualized by the closeness of the lines to each various other. It is proportional to the variety of lines per unit area perpendicular to the lines. a generally used phrase is "magnetic flux density".Magnetic field lines never cross. The magnetic area at any type of suggest is distinctive.Magnetic area lines are constant, developing closed loops without beginning or finish.(List adapted from OpenStaxCollege discussion.)
Add iron core to solenoid
IndexMagnetic area concepts
slrfc.org***** Electricity and also Magnetism R Nave
Go BackIron Core Solenoid An iron corehas actually theeffect of multiplying significantly the magnetic area ofa solenoid compared to the air core solenoid on the left.

*
Properties of iron core solenoid
IndexMagnetic area concepts
slrfc.org***** Electricity and Magnetism R Nave
Go Back
Electromagnet

Electromagnets are normally in the develop of iron core solenoids. The ferromagnetic residential or commercial property of the iron core reasons the interior magnetic domains of the iron to line up via the smaller sized driving magnetic area created by the existing in the solenoid. The result is the multiplication of the magnetic field by determinants of 10s to even thousands.

See more: Explain Why Vision Is Lost When Light Hits The Blind Spot ? Special Senses: Visual Tests And Experiments

The solenoid area relationship is

*

and also k is the loved one permeability of the iron, shows the magnifying impact of the iron core.

*
IndexMagnetic area concepts
slrfc.org***** Electricity and Magnetism R Nave
Go Back