Length affects the resistance

Aim: The aim of my probe is to investigate how continuance affects the rampart of a length of telegraph The resistance of a conducting wire depends on authentic factors. Some of these variables are listed below: * aloofness of wire * Diameter of wire * Temperature at which wire is at * The material of which wire is made out of * The voltage divergency across circuit * Cross sectional area These must be kept constant (except the length of the wire). The three major(ip) factors are explained bellow: 1) Temperature When the temperature of a alloy increases the resistance of that metal increases. This is because when the temperature increases the atoms of the metal vibrate to a greater extent than vigoursly because of the increase in push button. This mover that the electrons gift more difficulty maketing through the wire as they collide with the atoms which are in their pathway. This increases the amount of collisions accordingly thither is more resistance. How ever it is hard to keep the temperature on the dot the akin as the populate temperature might change from twenty-four hour period to day. It is demand to use a low voltage because it means a low current that will not alter up the wires. If a high voltage is used the energy would be in form of heat which would make the sample unfair.

The investigation will be done at room temperature. The temperature cannot be investigated because it is hard to control the range of temperature needed without the crystallize apparatus. 2) Length of wire The larger the length of the wire, the larger the resistance. This is beca use there are more atoms from the metal so t! here is more incident that the electrons would collide with one of the atoms therefore there is more resistance. The length of wire will be variable... If you want to get a full essay, order it on our website: BestEssayCheap.com

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