The Thickness of Nichrome Wire And Its Effect on Its Resistance Introduction A current is the flow of negative electrons around a circuit. Electrons get pushed out of the negative pole of the cell and drift slowly round the circuit, from atom to atom in the wire, to the positive pole of the cell. A current flowing in one direction like this is called direct current. (d.c.) A cell pushes these electrons around a circuit. It acts as an electric pump. Different cells provide electrons
applied to the spring, the further the spring will stretch. This is because extension is proportional to load and so if load increases so does extension and so stretching distance. Equipment: * 25swg Copper * 26swg Nichrome * 32swg Constantin * 32swg Nichrome * Stand * Clamp * Ruler * Weights * Hook Method Step 1: Collect all equipment Step 2: Set-up as diagram below shows. Step 3: Get a Copper wire, and using a cylindrical object (same size all the time)
The Resistance of a Wire Introduction: In this piece of coursework, I have been finding out factors that affect the resistance of a wire. Firstly, I will explain how resistance works. Resistance is when electrons in a wire collide with atoms also in the wire. When the electrons and the atoms collide the electrons start to move slower, which then causes resistance. So, resistance is how hard it is to move electrons through a wire. Now, I am going to tell you what are the factors of wire
copper 0.274mm, nichrome 0.274mm and nichrome 0.457mm. The voltage and current will be measured and the resistance calculated (using V = IR). The wire that has the largest variation between the two measurements will be used, to provide the best results possible. Preliminary Work ---------------- 4. Copper wire - 0.247mm diameter Length Current (A) Voltage (V) Resistance (Ω) 10cm 0.400 0.150 0.375 60cm 0.370 0.100 0.270 Nichrome wire - 0.247mm diameter
of the same thickness. Resistance is measured in Ohms. Variables There were three variables that our group was able to choose from; the length of the wire, the area of the wires cross section (thickness) or the type of wire (constantan or nichrome). All of these variables are able to change the resistance of the wire. Here are my thoughts and predictions on what would happen to the resistance of the wire as you change the variables. I think that if you change the length of the wire then
Wire Aim: The aim of this investigation is to see how the length of Nichrome wire affects its resistance Pre-test Results: Wire Type Swags Length of Wire (cm) Voltage (v) Current (a) Resistance (Ω) Constantan 26 10 20 40 13.5 27.5 56.4 0.4 37.5 687.5 1410 Copper 26 10 20 40 0.9 1.5 2.5 0.4 22.5 37.5 62.5 Nichrome 26 10 20 40 32.5 59.4 118.3 0.4 812.5 1485
Experiment 1 Aim: To test the influence that the potential difference will have on the current of an electric circuit. Investigative Question: What would the effect of the change in potential difference have on the current of the circuit, if the temperature in the circuit remains constant? Hypothesis: By decreasing the resistance in the electric circuit we will be increasing the total potential difference in the circuit and will therefore directly strengthen the current in the circuit. The relationship
magnetic ability. Icing sugar and H2SO4 Icing sugar is placed into a small watch glass and is noted as a white power. When the clear H2SO4 acid is poured onto the sugar, it becomes a fizzy brown liquid that creates a heat reaction. Burning a nichrome wire A nichrome wire is a thin grey wire to begin with. When it is held into a flame, it bursts into a white wire instead of grey. An interesting remark though, is when the wire is removed from the flame, it returns to its original state of a grey wire.
Factors Which Affect the Resistance of a Wire To start off this experiment I feel that it is suitable to explain the main facts of this study. Below is a section explaining the resistance in detail. Facts on Resistance: I have shown how resistance occurs. · WIRE · ATOMS · ELECTRONS Resistance occurs when the electrons traveling along the wire collide with the atoms of the wire. These collisions slow down the flow of electrons causing resistance. Resistance is a
pack – this provides energy for the circuit 3 wires – are used to connect power pack to resistance board Resistance board – nichrome wire is tied to it and the board is used to work out the length of wire Nichrome wire (0.2mm) – alloy of nickel and chromium. Acts as a resistor Ammeter – measures current Crocodile clips – connect wire to nichrome wire at different length Preliminary work: Before the main experiment I did some preliminary work to see if I could improve on
Scientific report on cations and anions How can we work out the unknown solutions by completing a flame test and a precipitate test? In this experiment we will work out two different unknown solutions using a flame test and a precipitate test. A flame test is a procedure you use in chemistry, predominantly with a Bunsen burner, to detect certain elements, based on their emission of colour that they give off. The colour of the flame will depend on what substance (or solution) you are using during
Investigating the Factors that Affect the Resistance of a Wire Aim To study the factors which affect the resistance of a wire. Background Information Although current and potential difference measure different things, they are related to each other. In 1826, Georg Ohm discovered that doubling the p.d. doubled the current. (Taken from Ohm's Law: the current flowing through a metal wire is proportional to the potential difference across it (providing the temperature is constant)
the length of nichrome wire at intervals of 10cm's. I also plan to investigate how the thickness of a wire affects the resistance. I plan to do this by measuring different lengths and both thicknesses of wire and comparing results. In my experiment, the voltage, material and temperature will remain constant. Prediction ========== I predict that the longer the wire is the more resistance there will be. In relation to the thickness, I predict that the thicker nichrome wire will produce
flow of electrons thus causing the coil to heat up and make the water boil. Nichrome is commonly the material used in the heating element; it is 80% nickel and 20% chromium and is the ultimate material because of its moderately high resistance and procedures a coating of chromium oxide when it is heated upon first application. Nichrome does not oxidize which prevents it from breaking down or burning. The compound Nichrome is an alloy, made by joining nickel, iron and chromium metals. These metals
The Relationship Between the Length of Constantan Wires in a Circuit and the Current Aim To investigate the relationship between the length of constantan wires in a circuit and the current flowing through. Introduction ============ In a conductor electrons are able to jump between atoms. However in insulators they remain around a single atom unable to move. Constantan, a metal, unlike most other metals is a poor conductor although it is also a poor insulator. Being a metal it
The purpose of conducting experiment was to determine the identity of white compound. Based on the 5 gram of unknown white compound several experiment conducted including solubility test, pH test, flame test, and ion test. Several materials including chemicals used throughout experiment and will be described through paragraphs. Solubility test was used to determine if unknown white compound was soluble in water. To conduct the solubility test, many materials were used such as flask, glass rod, scale
The Length of a Wire and Its Effect on Resistance Introduction: In an electrical circuit, the current (flow rate of charge) depends on the battery voltage that causes the charge to flow through the circuit and the components in the circuit. A circuit consists of a bulb, a battery and a resistor. The bulb is like a resistor, it slows down the electrons and the battery pushes the electrons and gives them energy. A component is a resistor, it slows down the flow of electrons. The bulb
Analysis and Identification of an Ionic Compound using Logic Trees Introduction: It is important to be able to analyze and identify compounds especially in industry where even slight changes in compound structure or concentration could have disastrous effects. In this project, comprising of three parts, cation and anion elimination and confirmation tests are performed. Two logic trees are then constructed from the test results. These logic trees are used to identify the anion and cation of an unknown
work with a group of three people and we will find out how the length of the wire affects the resistance of the current passing through it. I will use a power pack, some connecting wires, a voltmeter, an ammeter and a metre rule with a built-in nichrome contact wire to do the experiment. Then I will draw a table and plot a graph to show the results. Predictions Now, I have enough information to make my prediction based upon the hypothesis in the previous page.
Investigating the Resistance of a Wire We have been given the task to investigate the resistance of different wires, I am firstly going to start by explaining what resistance is, why it occurs, what causes it, and how it can be used to our advantages. Resistance is a term used to describe the property that various materials possess to restrict or inhibit the flow of electricity. Whether or not a material obeys Ohm's law, its resistance can be described in terms of its resistivity.