... are randomly pointing anywhere therefore cancelling them out. When an electric current is passed through the coil; this induces a strong magnetic field. The iron core is then placed in this field; causing the domains to point in one direction (The direction of the field.) When the domains are pointing in one direction a magnet is made. The strength magnetic field produced by the solenoid is then increased greatly. The higher the current passing through the coil the stronger the magnetic field this is because there will be more electrons (e ) moving there will be. Without being placed in magnetic field. With being placed in a magnetic field. (Solenoid coil) If the double the amount of turns we will get double the amount of electrons moving in that location or area, increasing the magnetic field because of smaller individual magnetic field will merge making a tug of war effect. However increasing turns ...

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