Investigating Resistances of Wires :: Papers

Investigating Resistances of Wires Aim To investigate different opponents of electrifys to jibe which has the most resistance and which shows the least resistance. I exit be feeling at resistances affected by the length of wire. Variables I could change I had the choice of several variables to change such as length, cross sectioned area, material and temperature the experiment is conducted at. Prediction I believe that by increase the wires length it would increase the resistance. Therefor by decreasing the length it would as well as decrease the resistance. I also believe that the rate of the increasing resistance will be directly proportional to the length so if the length were doubled the resistance would also double. I think the graph will look like this Reason The property that transforms electrical energy into shake up energy, in opposing electrical current, is resistance. A property of the atoms of any conductors is that they shoot free electrons in the outer shell of their structure. As a upshot of the structure of all conductive atoms, the outer electrons are able to lift about freely even in a solid. When there is a potential difference across a conductive material all of the free electrons arrange themselves in lines moving in the same direction. This forms an electrical current. Resistance is encountered when the charged particles that make up the current collide with different fixed particles in the material. As the resistance of a material increases so to must the force required to drive the same amount of current. (Information found on a GCSE Physics website) Ohms law In1826 Georg Ohm discovered that the current current through the wire is proportional to the potential difference across it (providing the temperature waistband the same.) Proportional means if you double the potential difference the current is doubled (this schooling was found in GCSE Physics f or you text book) Current through the wire IMAGE Amps Volts