Aim: The aim of my probe is to investigate how continuance affects the tube of a length of fit The resistance of a electrify depends on authentic factors. Some of these variables are listed below: * distance of wire * Diameter of wire * Temperature at which wire is at * The material of which wire is made out of * The voltage dissimilarity across circuit * Cross sectional area These must(prenominal) be kept constant (except the length of the wire). The three study factors are explained bellow: 1) Temperature When the temperature of a metal increases the resistance of that metal increases. This is because when the temperature increases the atoms of the metal vibrate more than than vigoursly because of the increase in susceptibility. This marrow that the electrons gift more difficulty lastting through the wire as they collide with the atoms which are in their pathway. This increases the amount of collisions so thither is more resistance. However it is hard to keep the temperature incisively the akin as the fashion temperature might change from solar day to day. It is demand to use a low voltage because it factor a low current that will not heat energy up the wires. If a high voltage is used the energy would be in form of heat which would make the experimentation 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 correct apparatus. 2) Length 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 incident that th! e 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:
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