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The right-hand rule is a hand mnemonic used by physicists to recall the direction of magnetic forces.

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Magnetic field lines never begin or end; they always form closed loops and continue inside a magnetic substance (though sometimes they are not drawn this way).

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Magnetic field lines naturally clump together in areas with the strongest magnetic field. This means that the density of field lines reflects the field's strength.

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Magnetic field lines never cross.

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Magnetic Fields exist around a magnet

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The mobility of charges causes magnetic force, which is a consequence of electromagnetic force.

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An object which is capable of producing magnetic field and attracting unlike poles and repelling like poles.