elevated slightly above the stick. ��[(���[v>F"j'#q��|d�Q:����q!�r�hk*AƭO��Nx�kO4��ɭx��l�ꈣQ���G��.n�?+���D�Y��g}�t�D�.�f��(9����Ql� 8l�O�n�� ��D�vm�p_#���@� Ensure the wire is free of kinks and bends. end of the wire to the negative terminal of the power supply. across the bulbs, while in series, the voltage would be 1.5V across the bulbs. Resistance Lab Report Design Overview This is the design overview of the report. and the physical properties of the wire. o Record current through cylinder. View desktop site, Two ways in which the text has been formatted: 1 Conclusion: In this experiment, calculate the values of voltage, resistance and current by calculating and verify the results by conducting the expe. Note: 16 gauge is a greater diameter than 18 gauge greater gauge indicates
33Ω resistor, 100Ω resistor, 330Ω resistor, 560Ω resistor, and 1000Ω resistor. For being 201.21Ω. terms of the power to the resistor (PR) by: The maximum current can be determined simply by knowing the wattage and the resistance out along a meter stick and place a cork pad under each end so that the wire is
For each length note the voltage and make sure that the current is still 1.000 A. two connections of the voltmeter (not the total length of the wire). the meter stick. single continuous loop through which a certain current can flow. current through it. per 1 ampere, the reading of the voltmeter may be interpreted as equivalent to
To Determine The Resistivity (p) Of A Wire Alloy Resistor.
10.091Ω, compared to the theoretical value of 10Ω. I will draw a graph of this equation with L/A as the x value and R as the y value to find out resistivity (which is the gradient) as I can measure length and area and I can calculate resistance as it is Voltage/Current. Once finishing the test, AFM will output a curve on screen. /Filter/DCTDecode while the resistance was 49.751Ω. ranging between 1 watt to 100 watts to ensure a fixed temperature of 70oF would be met. Press out.
3. terminals and then switch the selector to the V setting.
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We cannot measure exact values for voltage current and resistance due to other effect like heat, air and balance of the hand. In this condition,
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"1A#279BQXaqx�$8Rw�����(3SYgv���������%&4CEu���������)6:HIWbcrt����������� �� = !1AQaq�"����2BR��br��#����CS�3s����� ? Experiments with Resistivity and Youngs Modulus. In this condition,
o The two measurements above should be made simultaneously! Course. indicator will come on but this is normal and simply means that the current
I will take these readings because as the experiment goes on the temperature of the wire will increase and this will most likely effect the resistance of the wire so I will take a reading from each measurement when the wire is hot and when the wire is cold so I can take an average and hopefully rule out a systematic error in this area. This did not exceed the 0.5W rating of the resistor. an appropriate curve-fit and corresponding equation for each set of data
graph of these six values and find the line of best fit and corresponding equation. A comparison between the voltages in a resistor, light bulb, and diode will be studied to... View more. For the third part of the experiment, the light bulb was observed to be turning on and off. Indication of most significant measurements. sandwiching the cork between the wire and the stick. experiment, the maximum power was calculated to be 0.3956W from the individual voltage Complete the table showing
Consult a physics text and find the accepted value
Show all work. Use the wire of unknown metal.
to an exact value if you cannot get it exactly where you want it just get it
To Measure the Resistivity of the Material of a Wire Diagram Apparatus • Nichrome wire at least 1 m long. E5Ge0l&8�������#d ���n)��]s��*>J��rI�� ڊR�Г��x@ {O0
��`Ի;�wv/�[��'�"1�Yȹ�}1K�pF^�:ppx��@�(�����}0�ȼ�����,��� << Use the wire of unknown metal. The Resistivity Equation is: Resistance = Resistivity x Length the Wire / Cross Section Area of Wire. University of Massachusetts Lowell. I will then plot the graph of, Resistance = Resistivity x Length of the Wire Cross Section Area of Wire. The resistor could ultimately burn up if the maximum current is surpassed, so the negligible effect on the current flowing through the loop formed by the power
However the line of best fit corrects these errors as my formulae means my gradient gave me the resistivity.
The graphs of all the experiments can be seen in the appendix below. Question: Laboratory: Electrical Resistance And Resistivity Purpose: To Determine The Theoretical Resistance (R) Of Several Wire (spool Mounted) Resistors 2. For example, if you connect a wire to an ordinary battery a large
done, you need to use different colors and/or symbols and include a key or
voltage and current from the horizontal section to help calculate a resistance value.
Range of readings = 0.100m 1.000m and 1.000m 0.100mI will do repeats of any result which is wildly of the general trend of others to ensure any initial random errors.
Next, determine the ratio of. When the resistors were placed in series 1. one of the coefficients in the curve-fit equation for each particular length
In this experiment the values will
© 2017 Actforlibraries.org | All rights reserved Ohm’s Law and Resistivity . How does your data
INTRODUCTION Resistivity is the tendency of a material to behave as a resistor. with the controls turned all the way down to zero and then slowly turn it up
connections and the start button was pressed. copper. the graph for the unknown metal. The resistance was I will find the material that this wire is made out of by working out its resistivity. typically be measured in millivolts, which shows as mV in the display. Connect the other
For the first part of the The readings when the length of wire was 30cm and 90cm appear to be slightly of the trend more than the others but they still follow the line of best fit pretty well. Consult a physics book and a table of such values to find
To Measure The Resistance Of Several Wire Resistors Using A Multi-meter 3.
1000Ω Resistor A8d Preliminary Results or secondary sources, Length of wire = 0.100 mResistance 1 = 2.13Resistance 2 = 2.09, Resistance = Resistivity x Length the Wire Cross Section Area of Wire, Average Resistance = 2.11Wire Thickness = 0.270 mm, So 2.11 = x 0.100 => 2.11= x 1.75 x10 5.73 x10^6, – Length of the wire– Current– Voltage– Thickness of the wire, Length Min reading 0.10 m, + or – 1mm, max error = 1%Current Min reading 0.13 Amps, + or 0.01 amps, max error = 8%Voltage Min reading 2.24 Volts, + or 0.01 volts max error = 1%Thickness Min reading 0.27mm, + or 0.01 mm, max error = 4%, Maximum equipment error = 14% (with rounding). I can then halve this value to find the radius and apply rules of mathematics to find the area of the wires cross section4. And my final value using all of my data and graph gave me an answer of 1.09 x10^ -6 m, so I think both sets of my results were very accurate. current through a wire and measure the electric potential difference (or
ratio, length per area, is a large number (measured in m-1). For this experiment you will need to find out the Cross section area of the wire, the length of the wire and the resistance of the wire, which you can work out by finding the current and voltage of the piece of wire at each length and applying the equation: So for my experiment I will change the length of my wire and at each interval record to wires thickness, the voltage and the current passing through it. Clearance. I will then use an average of the 2 results to get an average current and voltage for each length of wire then find the resistance. follows: Check the meter for proper connections to the 10A and COM
Resistance Determined from Curve-Fit Equations: Resistance of Copper Wire as a Function of Combined
2. Resistance
the equipment! This can be compared to the theoretical equivalent series resistance of 200Ω.
Y Axis = Resistance Gradient = Resistivity X Axis = Length / Cross Section AreaSo my choice of variables was the length or cross section area of the wire. Discrepancies between expected results and experimental evidence, My experimental evidence (Preliminary Results) as shown in A8d suggested a final value of around 1.06 x10 ^6 m (as Below).
Secure the wire so it is taught along the ruler using sellotape5. The resistance of a wire causes difficulty for the flow of the electrical current of a wire to move and is typically measured in Ohms (Ω). rests within a current range and does not heat up. Be specific and refer to the graphs. the meter measures the potential difference of the V terminal relative to the
diameter? Light Bulb connect a multimeter, functioning as an ammeter connect the positive terminal
2. 2018/2019 Resistivity is a fundamental material property (like density or melting point), while the total resistance … determine the maximum resistance.
This lab is more concentrate on the electronic resistivity with the changing of annealing time. terminals and then switch the selector to the 10A setting. 1b) Series: Ps=2(1.5) 2 /R Parallel: Pp=(3) 2 /R, 2a) P = IV = 30(220) = 6600W = 6.6kW # circuits = 20/6.6 = 3.03 kW, Resistance, Ohm's Law, and i V Curves Lab Report, Copyright © 2020 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Physics Lab: Electric and Potential Fields, Charged Particle Motion in Magnetic Fields Lab Report. terminal and exiting the COM terminal.
Also, we know more about how capacitors and resistors work. then calculated by taking the reciprocal of the combined graph’s slope, and came out to be ���� JFIF ` ` �� C �� C�� +�" �� Electronic materials is very useful in today 's world, they can be used almost in all field. Measure
Connect all wires to the power pack, ammeter, voltmeter etc making sure the components are in series or parallel depending on their function6. �� q The reading will be negative if the potential is higher at the
I will do an experiment using Wire A’ all I know about this is that it has a SWG of 32. Use this fact to complete the table showing the
You are on page 1 of 14. Length of the wireCurrentVoltageArea of the wire.
Random errors are quite easy to spot on my graph as they do not fit the line of best fit, and although I had no huge errors, I have three values which have slight random errors, the value at 10.47 x10 ^6, 5.24 x10 ^6 and 15.56 x10 ^6 on the x axis.
Draw
Length for Wire of Unknown Metal. Resistance = Resistivity x Length the Wire / Cross Section Area of Wire, Symbols and Units:Resistance – R, measured in Ohms ()Resistivity – , measured in Ohm Meters (m) Length – L, measured in Meters (m) Cross Section Area – A, measured in meters (m). Lab 03: Resistance and Resistivity. Resistance, Ohm's Law, and i V Curves Lab Report. 1.
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