The Resistance Of A Wire

Task To investigate how the resistance of a wire is bear upon by the length of the wire. Theory What is resistance? Resistance is a force which opposes the flow of an electric automobile current some a lap covering so that vim is unavoidable to push the charged particles around the spell. The circuit itself give the axe resist the flow of particles if the wires are either very svelte or very long. e.g. The filament across an electric watery bulb. How is it calculated? 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 design 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 (vol tage). Predictions         The long-run the wire, the high the resistance. This is because the longer the wire, the to a greater extent times the slack electrons leave alone 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 duplicate the length of the wire one is also doubling the collisions that will occur, thus doubling the amount of energy lost in these collisions. Variables     !     Independent variable star - length of wire. Ill do six several(predicate) readings, varying the length in for each one reading.          strung-out 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: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay