Length affects the resistance

Aim: The aim of my probe is to enquire how continuance affects the resistance of a distance of fit out The resistance of a wire depends on trusty factors. Some of these variables be listed downstairs: * aloofness of wire * Diameter of wire * Temperature at which wire is at * The material of which wire is made out of * The potency difference across circuit * hybridizing sectional atomic number 18a These must be kept constant (except the aloofness of the wire). The three major factors are explained bel low-down: 1) Temperature When the temperature of a surface outgrowths the resistance of that surface increases. This is because when the temperature increases the atoms of the metal vibrate more vigoursly because of the increase in energy. This means that the electrons afford more difficulty get through the wire as they collide with the atoms which are in their pathway. This increases the amount of collisions thitherfore there is more resistance. However it is strong to keep the temperature exactly the same as the room temperature talent change from day to day. It is shoot to use a low potential difference because it means a low current that get out not wake up the wires. If a high voltage is used the energy would be in form of heat which would make the experiment unfair.

The investigating will be make at room temperature. The temperature cannot be investigated because it is hard to control the carry of temperature needed without the correct apparatus. 2) continuance of wire The larger the length of the wire, the larger the resistance. This is because there are more atoms from the metal so there is more sequent that the electrons would collide with one of the atoms wherefore there is more resistance. The length of wire will be variable... If you want to get a full essay, order it on our website: Ordercustompaper.com

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