This experiment will be focusing specifically on that last factor – length – and investigate just how much of a role a length of a wire would have on its electrical resistance by using a range of wire lengths to test with. T h e g r a d i e n t o f e a c h g r a p h w i l l g i v e y o u t h e q u a n t i t y r� �/� �A T h e r e f o r e i f y o u m u l t i p l y t h e g r a d i e n t b y t h e c r o s s - s e c t i o n a l a r e a , t h i s w i l l g i v e y o u t h e r e s i s t i v i t y o f t h e w i r e . George Ohm discovered that the potential different of a circuit corresponds to the current flowing thr… When electrons travel through wires or other external circuits, they travel in a zigzag pattern that results in a collision between the electrons and the ions in the conductor, and this is known as resistance. Kinetics Lab Explained: Iodination of Acetone, The Energy of Phase Changes Lab Explained, Determination of Acetic Acid In Vinegar Lab Explained, Energy Content of Food Lab Report Answers, Pip and Joe’s Relationship in Great Expectations, Dulce Et Decorum Est by Wilfred Owen: Poem Analysis, The Manhunt by Simon Armitage: Poem Analysis, The experiment will work with 5 sets of nichrome, Each wire will be measured with an ohmmeter of, wires, starting from the length of 10 cm, added, a multimeter with an uncertainty of ±0.01Ω, with increments of 10cm. How does changing the length of a nichrome wire with a diameter of 0.315 mm – cut into measurements of 10cm, 20cm, 30cm, 40cm and 50cm — affect the electrical resistance generated within the nichrome wires that can be captured by an ohmmeter while keeping the temperature and the location of the experiment controlled? R e c o r d t h e r e a d i n g s o n t h e a m m e t e r a n d v o l t m e t e r f o r 8 d i f f e r e n t l e n g t h s . Title Experiment To Measure The Resistivity Of A Wire Author Mark Ian Dixon Last modified by Education Created Date 5/15/2011 8:45:00 PM Company Pre-installed Company Other titles Experiment To Measure The Resistivity Of A Web. ( y o u c a n u s e t h e m e a s u r 0 1 ; � � � � � � � � � � � � � � � � � � � � � 4 6 � � � t /BitsPerComponent 8 stream /Height 299 M�.t� .��$�~��� 3: (6.50+7.00+6.50+7.90) ÷ 4 = 6.98 Average uncertainty data of no. uncertainty of ±0.05cm and will be as follows: 10, A diameter of a wire is one of the factors, that could affect a wire’s resistance for, there will be more room available for the, affect the resistance of the wire because, the resistance of the wire since it causes, voltage, the more voltage and current will, crucial step as it would result in better. /Filter/DCTDecode If the length of nichrome wire is increased by an increment of 10cm starting from 10cm in length, then the graph measuring the electrical resistance of the wires will observe a positive slope with the mathematical function of y = mx that displays the increasing amount of resistance generated. Lab 2 - Lab Lab 5 - Lab Lab 11 Spherical Mirrors and Lenses Lab 8 Magnetic Field of a Slinky Solenoid Lab 2 Ohm's Law - lab report Lab questions - lab report Preview text Resistivity Course: PHY156 Section: 12919 Student Name: Gamoi Paisley Lab Partner: Asaba Anis Date: 09/26/2017 Objective: To determine the resistivity of a conductor, with a uniformed cross section, across its length. Another example would be the volume control on a radio where a resistor is used to portion out the signal of it which allows you to control the volume level. L e n g t h / m V o l t a g e / V C u r r e n t / A R e s i s t a n c e / W� C a r r y o u t t h e a b o v e p r o c e s s f o r t h e o t h e r c o n s t a n t a n w i r e a n d b o t h n i c h r o m e w i r e s . Have a clear and clear working space for the experiment. Secondly, resistance can also be used a very useful tool that enables you to control certain things. The pattern on the graph supports the hypothesis of the experiment which predicted that if the length of the wire increased, the resistance measured would increase as well, the graph will observe a positive gradient with the mathematical function of y = mx + c which is supposed to display the increasing amount of resistance. In conclusion, the experiment was a successful investigation that successfully answers the research question of how basically changing the length of a wire (specially a nichrome wire with a diameter of 0.315 cut into measurements of 10cm, 20cm, 30cm, 40cm and 50cm) could affect the electrical resistance generated within the wires. Professional writers in all subject areas are available and will meet your assignment deadline. It is therefore important to take note of the resistance when dealing with wires to supply power to a device or so. The Physics Classroom, n.d. This unit for this gradient is ohm/cm, and the gradient represents the rate of the overall increase in the dependent variable as the independent variable progresses. It has been a known fact that the length of a wire is one of the four factors that has a role in the resistance of the wire, and this experiment has simply confirmed it. ]�sT�:t�;���#/�X�/�Fjm'�oDY2ob�ߞz1GN2�-��N��B f�C׊�:�kp�#�M��-?u U ��5ns;��^�4��:�Ǿ?hjcѬ��\�i��g���z�u��,o'Е,��T^��G�Pb۠ ��F!���\_I�k��;��&4�``U��'�����;��H�� Web. The resistance of a wire varies according to the four factors of the wire; they are the temperature, material, diameter/thickness and length of the wire. Source: “Resistance” Physics Classroom. Your online site for school work help and homework help. Free proofreading and copy-editing included. /Name/Im1 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). /Length 59108 7 0 obj Calculate the average. The graph also manifested a positive mathematical function of y = 0.132x + 2.3 with a positive gradient (0.132x) as well. BBC, Sep 15. The graph shows an increasing linear trend-line with the mathematical function of Y = 0.132X + 2.3, which displays a positive correlation as seen in the line that goes above and to the right, which indicates positive values, as well as the gradient that displays a positive value. h�_� CJ h�_� 5�>*CJ h�_� 5�>*CJ h�_� 2 0 1 q � � � � � � ( P ] ^ � � � � � : You already know that not everything conducts electricity equally well, and that some materials (like copper) resist A real life application would be a toaster where the wires are sized to get hot enough to toast bread but not enough to melt. When coming to measure those two datas, the datas gained from each trial were very inconsistent, which was presumably caused by the inconsistent rubbing with sandpaper, which will be further elaborated in the suggestions for improvements. << It only takes seconds! [http:// bbc.co.uk/schools/gcsebitesize/design/electronics/calculationsrev1.shtml], “Resistance and Resistivity” N.p., n.d. E5Ge0l&8�������#d ���n)��]s��*>J��rI�� ڊR�Г��x@ {O0 ��`Ի;�wv/�[��'�"1�Yȹ�}1K�pF^�:ppx��@�(�����}0�ȼ�����,��� ��ࡱ� > �� ���� " � ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������ � �� L bjbj�V�V ,' � � � �� �� �� � � � � � ! George Ohm discovered that the potential different of a circuit corresponds to the current flowing throughout a circuit, and that a circuit sometimes resists the flow of electricity. The slope reveals that when the length of a wire is increase, the resistance would go up by an approximate measurement of 1.25 Ω, which could be proven by the calculation of the graph where all the average was calculated from the average increments of each wire — (0.7+0.78+2.42+1.1)÷4=1.25. An example from the real life world would be LED lights that requires a resistor to control the flow of the electrical current to prevent getting damaged by high electrical current. View Lab Report - Lab Report Ohm's Law and Resistivity- Resistance from LITERATURE 101 at De La Salle University. - v v � v v v v v � � � v v v v v v v ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� b v v v v v v v v v � � : Experiment To Measure The Resistivity Of A Wire Equipment: 1m of constantan wire of diameter 0.27 and 0.56 mm, 1m of nichrome wire of diameter 0.27 and 0.56 mm 12 V supply, 2 multimeters Procedure Take one of the pieces of constantan wire and record its diameter in three places using the micrometer screw gauge.

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