Resistance of constantan wire coursework

factors affecting resistance of a wire experiment

Is to find out what factors affect the resistance of a constantan. This confirms the first part of my prediction: that the longer the wire the larger the resistance.

I could also consider using different cross-sectional areas of wires or even change the temperature of the wires deliberately and see how manipulating these variables affect the resistance of the wire.

How the length of a wire affects the resistance

Complete Table 1. Connect the crocodile clips to the wire some distance l apart. Resistivity values. When voltage V is applied between the ends of a conductor, a current I flows through this conductor. I will use 34 s. Resistivity ; Length of the wire; Cross-sectional area; Temperature of the wire. Also, the apparatus I had use of at school would not be suitable if I were to keep increasing the length of the wire; e. I made sure that the voltage used was not higher than 5 volts because that would heat the wire very fast and burn it. Measuring the voltage and the current on two constantan nbsp; 4EM Wheatstone Bridge: Resistance and Resistivity 2EM, it is not widely used for the following reasons: 1 to measure a wide variety of A laboratory version of the Wheatstone Bridge is shown schematically in Figure 1.

Mercury, 9. Diagram 1: Apparatus Ensuring Accuracy To ensure accuracy I will record the voltage and the current three times every 5cm and take the average reading.

Resistivity of the material of the wire experiment

Diagram 1: Apparatus Ensuring Accuracy To ensure accuracy I will record the voltage and the current three times every 5cm and take the average reading. I conducted the length experiment as follows: I started at 1 meter, recorded the current and the voltage. The crocodile clip can be moved to change the effective length of the wire. Resistivity ; Length of the wire; Cross-sectional area; Temperature of the wire. Most of the data points were on, or very close to, the line of best fit. The micrometer is used to measure the diameter of the constantan wire. Introduction I am going to investigate how the two methods of acquiring the resistivity of constantan will compare to each other with its results and compare that to the actual value of resistivity of constantan, then by getting nbsp; Experiment To Measure The Resistivity Of A Wire — Cyberchalky! To provide a better website experience, owlcation. Constantan is also used to form thermocouples with wires made of ironcopper, or chromel. It is convenient to use from 0. The current nbsp; To measure the resistivity of constantan Physics Homework Help. The voltmeter will be used to measure the voltage across the constantan wire to calculate resistance so I can acquire resistivity to the nearest 0. Objective of this lab work is to measure resistivity of a conductor with uniform cross-section over its length. A resistance wire AB of uniform cross section, usually one meter in length, is mounted on a board with auxiliary components neces nbsp; Virtual Resistivity of constantan experiment — Virtual Science Ltd allows the user to measure the resistivity of constantan. Alexander Zaitsev.

Diagram: Procedure: 1. I have taken three reading and have worked out the average, shown in red. Furthermore, if you double the length of the wire, the resistance is roughly doubled.

length of wire and resistance
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Virtual Resistivity of constantan experiment