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In this experiment I intend to find out what affect the amount of turns in the coil of a solenoid, has on an electromagnet.
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Physics Coursework Electromagnetism Investigation Aim In this experiment I intend to find out what affect the amount of turns in the coil of a solenoid, has on an electromagnet. Previous Scientific Knowledge I know that a steel bar magnet emits a magnetic field flowing from its North to South Pole. These can be created by magnetising a piece of steel, which aligns the metals molecular magnets; thus strengthening the field. These will remain magnetised because steel is magnetically hard, iron however is magnetically soft and once magnetised, will soon lose those properties. This makes iron the ideal substance for an electromagnet because it can be turned on and off. A current passing through a wire generates a magnetic field and if an iron core is placed inside a solenoid (coil of wire) it will become an electromagnet, amplifying and increasing this field with its own magnetic properties. While a current passes through the electromagnet,...
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