Task To investigate how the resistance of a fit is touch by the length of the wire. Theory What is resistance? Resistance is a force which opposes the flow of an electric automobile current around a lap covering so that vim is take to push the charged particles around the lick. The circuit itself give the ax resist the flow of particles if the wires are either very lissome or very long. e.g. The filament across an electric watery bulb. How is it metrical? The resistance of a length of wire is measured by measuring the current present in the circuit (in series) and the voltage across the wire (in parallel). These measurements are then pulmonary tuberculosis to this formula: Gradient = resistance V = I x R The early(a) ways of piece Ohms Law are: R = V/I or I = V/R Ohms Law It is overly relevant to know of Ohms Law, which states that the current by means of a metallic conductor (e.g. wire) at a regular temperature is proportional to the potential difference (voltage). Predictions         The long-run the wire, the high the resistance. This is because the longer the wire, the to a greater extent times the deliver electrons go out collide with other free electrons, the particles making up the metal, and any impurities in the metal. Therefore, more zip is going to be lost in these collisions (as heat).
        Furthermore, stunt woman the length of the wire will result in trope the resistance. This is because by stunt man the length of the wire one is also doubling the collisions that will occur, thus doubling the amount of energy lost in these co llisions. Variables         ! Independent inconsistent - length of wire. Ill do six polar readings, varying the length in for each one reading.         mutualist variable - what youll measure. Ill measure the resistance in each reading.         Controlled variable -... If you want to get a full essay, companionship it on our website:
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