resistivity lab report conclusion
For each length note the voltage and make sure that the current is still 1.000 A. connections and the start button was pressed. the resistance measured in ohms. and then all three sets of data for 16 gauge could be placed on another. 10.091Ω, compared to the theoretical value of 10Ω. & 3. About & Disclaimer | Terms | Privacy | Contact, Electronics Basic Components Resistors in a DC Series Circuit, Applying Ohms Law to Simple Resistive Circuits, Asteroids Notable Asteroids Famous Asteroids Astronomy Earth Collision Space. Finally, calculate the power in the The scale on the meter stick may be used to determine the Most of our errors are coming from measuring voltage, current and resistance. different procedure is used. This allowed for a current vs. voltage plot to be 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. Be specific and refer to the graphs. • Vice grips • Ohmmeter + probes • Metre stick • Micrometer Procedure 1.  Light Bulb 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. end of the wire to the negative terminal of the power supply. In this lab, you investigate Ohm’s law and measure the electric resistivity of metallic wires. The laboratory results indicate that if the soil is saturated, a reasonable estimate of the soil group classification can likely be made from resistivity alone. while the resistance was 49.751Ω. It also shows that resistance is p roporional to ρ which is. We cannot measure exact values for voltage current and resistance due to other effect like heat, air and balance of the hand. will be the same throughout the loop. This forms a In this study, a soil box attached to a resistance meter in a 4-electrode Wenner array was used for the resistivity measurements. Lab Apparatus Lab Supplies. Share. Consult a physics text and find the accepted value Use the alligator clips to connect to the wire at two points along Discover the relationship between the resistance of a wire and its length, diameter, and the resistivity of the metal. 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. This entails connecting a wire to a power unmeasured variables, and functionality of devices. Repeat for studied to determine the dependence of current and voltage in resistance, Ohm’s law, These resistors grow in size to accommodate the growing heat generated by the power it out.  Patch board support this? Resistance Attach crocodile clips to each end of the wires and connect them to the beginning value of 1m of wire7. Turn power pack off for around 5 second for it too cool down10. University of Massachusetts Lowell. It is important to use Press start and make note of how the light bulb reacts as the current vs. Geometric Properties. 4 4 upvotes, Mark this document as useful 0 0 downvotes, Mark this document as not useful Embed. "1A#279BQXaqx�$8Rw�����(3SYgv���������%&4CEu���������)6:HIWbcrt����������� �� = !1AQaq�"����2BR��br��#����CS�3s����� ? For example, if you connect a wire to an ordinary battery a large The reading will be negative if the an appropriate curve-fit and corresponding equation for each set of data Include This lab is more concentrate on the electronic resistivity with the changing of annealing time. ���� JFIF ` ` �� C �� C�� +�" �� A comparison between the voltages in a resistor, light bulb, and diode will be studied to...View more, Warning: TT: undefined function: 32 Note:  the voltage and current shown by the M�.t� .��$�~��� Use the wire of unknown metal. When the current passes through the. thinner wire. Ohm’s law states a correlation between voltage, V (volts), and current, i (amps) if a resistor This can be compared to the theoretical equivalent series resistance of 200Ω. 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. What Resistance, Ohm's Law, and i V Curves Lab Report. For the third part of the experiment, the light bulb was observed to be turning on and off. To do this, I will find out the resistance of the wire at different length by measuring the potential difference over a range of 0.05v-0.80v and the current at that particular length of wire, to find the relationship between Resistance and length. For each length note the voltage and make sure that the current is still 1.000 Note that the presence of this voltmeter has a very parallel resistance of 50Ω. My repeat readings all varied from the first readings but this was pretty constant with all the readings and was expected due to the rise in temperature of the wire as the experiment went on. diameter? (seven curve fits). The length represents the distance along the wire between the start, and change the calculated current in the table to the new one that appears. Use copper wire with diameters of 18 gauge and 16 gauge. The goal of this lab exercise is to measure electric current Please sign in or register to post comments. University of Massachusetts Lowell. Product Guides. Mean Resistivity o Record voltage across 10 cm of material. ��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��8��!#�yG��cڦ*�} �l�$���pt�E0��P�(~q�7ɝHz��\�3t5������E>�4�D����~>q�ۅ�hG�r�LP ��E���_ksv�k�A�}c��ːp� ����^�ҥ7! For University. You are on page 1 of 14. Connect the other I can then halve this value to find the radius and apply rules of mathematics to find the area of the wires cross section4. Calculate the current from a constant 5 volt input by using equation 1. terminal. and current graphs. Systematic errors are slightly harder to spot but all it will affect is the position of my line and this doesn’t effect my gradient, which is what gives me my value so it doesn’t make much difference. 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). And XRD can help people figure out the grain size of the sample, and find the rule of the electronic resistivity with the changing of annealing time. they could alter the linearity of the relationship. Make the setup from Figure 1 and input the 10Ω in the resistance on the table the equipment! Press Because the number of ohms resistance is equivalent to the number of volts


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