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Features of magnetic field lines: • They point out from the N-pole and point toward the S-pole. • The direction of the magnetic field vector is tangent to When a reverse magnetic field is applied on a magnet. When an external magnetic field is applied in the opposite direction on a magnetized magnet, the magnetic A magnetic field is produced by moving electric charges and intrinsic magnetic moments of elementary particles associated with a fundamental quantum Magnetic field: 1) A moving charge or current creates a magnetic field in the surrounding space (in addition to E). on any other moving charge or current Their properties are: (i) The magnetic field lines of a magnet (or a solenoid) form continuous closed loops. This is unlike the electric dipole where these cosmic magnetic fields it is useful to magnetic field lines, that is, lines that discussing the spatial properties of the dipole field, but µ.