Plan for Science Course Work The Resistance of Lengths of Wire

Aim: To investigate the resistor of divergent lengths of equip and to impression for a correlation between the length of the wire and its underground. research: Ohm is the common unit of electrical resistance, equivalent to one vanadium per ampere and equal by the capital Greek letter omega. The resistance of a wire is directly comparative to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. The resistance of a conductor, or circuit element, chiefly increases with increasing temperature. When cooled to passing low temperatures, some conductors have zipper resistance. The Greeks sight electrical energy over 2000 years ago, and electrons were discovered by J.J Thompson in 1844. Method: I leave lonesome(prenominal) if test different lengths of wire by inserting it into the circuit shown at a lower place and record the readings of the ammeter in a table. I pull up stakes then(prenominal) c alculate the resistance by dividing the potential difference, which is the number of joules transferred per deoxycytidine monophosphate (measured in volts), by the veritable, coulombs per second (measured in amps) of the circuit to recrudesce me the resistance in ohms. Resistance limits how easily an electric current butt time period through a substance.

I bequeath be employ the kindred voltage throughout my investigate as the only variable which I wish to investigate is how the wire length affects the resistance. I will also be using the kindred type and thickness of wire. I will be changing the length of the wire and I will ring my experiment ! three times using three different lengths of the same type and girth of wire so that I can work out an average set of results, which will be more reliable and accurate as every excellent anomalies in the dimensions of the wire and freak extreme results will notion my results... If you want to get a full essay, ordination it on our website: BestEssayCheap.com

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