Aim: To investigate the factors of affecting the resistance of a wire.

2 A was flowing through the circuit. In fact, the literature value provided by the manufacturer… The difference… The r2 value for the line of best is 0.9956 which shows excellent linear correlation between the resistance and the length of a conductor, confirming the equation However, the minor noticeable distance between the average slope and the minimum and maximum slopes is due to the increasing uncertainty in the measurement of the length. With the voltage in the series circuit, we found no relationship.

For example, if a 2AWG wire requires a 10mm diameter, most manufacturers will label even a 9.8mm to be 10mm because of their own economic benefits. The formula (#2) that relates the diameter to the cross sectional area of the wire is: The electrical resistance can be determined by an ohmmeterlength, using a ruler, and the resistivity was determined by the literature value of 1.25×10-6 â¦.m.[1]. In this experiment, the students were given a spool of Nichrome wire to determine its diameter.

Click to learn more https://goo.gl/CYf83b. ��ࡱ� > �� u ���� ���� r s t ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� n�# �����cr�ӝ����PNG Electricity is conducted through a conductor, in this case wire, by means of free electrons. This maintained the temperature of the wires in the circuit because large currents would heat up the wires thus damaging the circuit and affecting the resistivity of nichrome. Then I will change the current to 0.

The uncertainty, however small, cannot be ignored and they must be explored so that if possible, they can be avoided in the future.

Variables Variables that I am going to keep the same. If you need this or any other sample, we can send it to you via email.

A: – Is the cross-sectional area of the wire in metres square and can be determined using the equation A = d 2 where “d” is the diameter of the wire. (2019, Dec 05). If I plot a graph of length on the x-axis against resistance on the y-axis. I also kept the diameter of the wire constant by using the same piece of wire throughout the whole experiment. I made sure that the wire was carefully tightened at both terminals to try to minimise the kinks or twists in the wire.



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