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Sources Of Error In Circuits


Procedure 3 was repeated with different current. Sources of Error in a Physics Experiment? What is the second law of thermodynamics? 8. If you want more ideas, please be more specific. click site

ExperienceI have a BS in Physics and an MS in Electrical Engineering. This also establishes that the bridge is correctly wired and every component is working. All rights reserved. If you do not have a multirange galvanometer, you risk damage to it if the tap key is closed when the bridge is nowhere near balance.

Possible Sources Of Error In Ohm's Law Experiment

This resistance is in the main path through the circuit. The rheostat was adjusted so that it had the maximum resistant. These resistances add to the total resistance in the series circuit and therefore affect (decrease) the amount of current flowing. In case you're still interested, here are my comments.

View Full Document Possible sources of error in this lab include random intrinsic error in the oscilloscope, resistor, inductor and capacitor, and also in measurements. You can only upload photos smaller than 5 MB. This is especially possible since the series current measurement was in between two scaled divisions on the milliammeter and was therefore subject to more uncertainty than the measurements for the current Sources Of Error In Physics Precision resistance box, 0.1 to 99.9 ohm.

Sign up to access the rest of the document. Series And Parallel Circuits Lab Sources Of Error Once these values were measured using the appropriate instrumentation the resistance in the circuit was computed using Ohm's Law. I am retired now. Slide wire form of the Wheatstone bridge.

Use the shortest wires possible. Examples Of Experimental Errors Terminals 2, 3, and 4 are electrically connected (through a metal "bus" or through the metal case of the instrument). QUESTIONS These questions are to be answered by doing a mathematical analysis of the bridge circuit, making use of circuit laws such as Kirchoff's laws and Th‚venin's theorem. Your cache administrator is webmaster.

  1. Have the circuit checked by the instructor. (2) Set the galvanometer button for lowest sensitivity and set the sliding tap at the midpoint of the slide wire.
  2. Although these differences may appear a little high a deeper analysis of the numbers rejects this notion.
  3. See any textbook.
  4. This may be attributed to the fact that the single measurement of the current read for the series circuit was in error more than the current readings taken for the parallel
  5. The specifications probably include zero offset, reading accuracy, and impedance.
  6. Stay logged in Physics Forums - The Fusion of Science and Community Forums > Science Education > Homework and Coursework Questions > Introductory Physics Homework > Menu Forums Featured Threads Recent

Series And Parallel Circuits Lab Sources Of Error

The wiring layout of the slidewire bridge. Connect it directly to terminals 1 and 2 at position "R". Possible Sources Of Error In Ohm's Law Experiment Slidewire assembly, one meter long. Sources Of Error In Experiments One lead of the galvanometer connects to a sliding tap key that can make electrical contact with this wire at any point along its length. [2] Fig. 3.

Share this thread via Reddit, Google+, Twitter, or Facebook Have something to add? http://phabletkeyboards.com/sources-of/sources-of-error-in-parallel-circuits.php Which wires need to be short, and which don't matter? I gave formal classroom lessons to technical co-workers periodically over a several year period.Education/CredentialsBS Physics, North Dakota State University MS Electrical Engineering, North Dakota State University User AgreementPrivacy Policy©2016 About.com. What is entropy? Types Of Sources Of Error

Another resistance box, need not have the 0.1 dial. Initially, when the bridge is not yet balanced, the current may be large enough to overload the galvanometer, risking damage to it. NelsonSteve JohnsonSuresh Chandra BenjaminPalash Apte Ask ExpertsVolunteer Steve Johnson ExpertiseI would be delighted to help with questions up through the first year of college Physics. http://phabletkeyboards.com/sources-of/sources-of-error-in-ac-circuits.php Ohm's Law can be used to determine the theoretical value of "I" that should have been obtained.

Record these in your lab notebook. [Manufacturer's catalogs are available in lab.] (1) Now use a precision resistance box in place of the "unknown" R (this box need not have 0.1 Sources Of Error In Measurement The voltmeter was connected in a parallel circuit with the eureka wire. 3. I hope this helps, Steve Add to this AnswerAsk a Question Related ArticlesGeorg OhmAutomotive Questions and Answers -Electrical Wire Size And Cable Length - Determining Proper Electrical Wire Size For Underground

Error source in an experiment Oct 11, 2005 #1 mich_v87 hey...we've done few days ago a physics lab experiment about the equipotential lines and electric field where we used the following

Use a 100 ohm resistor as R, and set the sliding tap at 50 cm. Trending I'll try again. MEASUREMENT PROCEDURE

First, to become familiar with the operation of the bridge, you will make a simple measurement. Sources Of Error Measuring Resistance The equations used to calculate results can hide important error sources in the procedure.

I wonder what are the sources or error and improvements of the experiment. In fact, the Wheatstone bridge is unsuitable for measuring very small resistances, of a few ohms or less. So you can use a resistance box as a convenient tool to find them, putting it in place of the "unknown" resistor, then deliberately unbalancing the bridge to determine how much my review here View Full Document Company About Us Scholarships Sitemap Standardized Tests Get Course Hero iOS Android Educators Careers Our Team Jobs Internship Help Contact Us FAQ Feedback Legal Copyright Policy Honor Code

You can only upload files of type PNG, JPG, or JPEG. The uniformity of the slide wire resistance depends on it being uniform in physical cross section. It is further understood that if two of the quantities are known one or both of the other quantities can be determined. Manufacturer's catalog describing the galvanometer.

Particularly Electricity, Electronics and Newtonian Mechanics (motion, acceleration etc.).