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Magnetism

Magnetic lines of force of a bar magnet shown by iron(Fe) filings on paper
A magnetized needle is floating in the air next to a metal ball
Electromagnetism
Electricity · Magnetism · Magnetic permeability
Electrostatics
Electric charge • Coulomb's law •
Electric field • Electric flux •
Gauss's law • Electric potential energy •
Electric potential • Electrostatic induction •
Electric dipole moment • Polarization density
Magnetostatics
Ampère's law • Electric current • Magnetic field •
Magnetization • Magnetic flux • Biot–Savart law •
Magnetic dipole moment • Gauss's law for magnetism
Electrodynamics
Lorentz force law • emf • Electromagnetic induction • Faraday’s law • Lenz's law • Displacement current • Maxwell's equations • EM field • Electromagnetic radiation • Liénard–Wiechert potential • Maxwell tensor • Eddy current
Electrical Network
Electrical conduction • Electrical resistance • Capacitance •
Inductance • Impedance • Resonant cavities • Waveguides
Covariant formulation
Electromagnetic tensor • EM Stress-energy tensor • Four-current • Electromagnetic four-potential

Magnetism is a force that attracts (pulls closer) or repels (pushes away) objects that have a magnetic material like iron inside them (magnetic objects). In simpler words, it is a property of substances which pull closer or repel other objects. It is a subject in physics.

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