Ohm's Law Essay

1333 words - 6 pages

Objective: The purpose of this lab is for student's to investigate the relationship between the three variables involved in Ohm's Law- Current, Voltage, and Resistance.Theory: The Ohm's law states that the direct current flowing in a conductor is directly proportional to the potential difference between its ends. It is usually formulated as V = IR, where V is the potential difference, or voltage, I is the current, and R is the resistance of the conductor.Formulas:V=IRMaterials:1) Circuits Experiment Board2) D-Cell3) Wire4) Digital Multimeter (DMM)5) ResistorsDiagrams:AmmmeterUmm WireVolt MeterrheostatProcedure:1) Making sure that the switch is open carefully construct the circuit. W ...view middle of the document...

2) For each value of R in table V very carefully adjust the knob of the power supply until the current R is 1ma (1ma Full scale meter). For each of these values of R in table V measure the voltage with a voltmeter (12 V Full-Scale).A. Variation of current with voltage keeping R constant.1. Applying Ohm's Law, for each value of I and Vr in Table I compute R and record these values in table I.2. Determine the average value of R from Table I and record in Table II.3. Determine the average value of Vr in table III and record in table IV.B. Variation of Voltage with resistance keeping it constant.Tabulations:Table I- Variation of Current with Voltage Keeping R Constant (Part A)I (ma) Vr (volts) R (Ω) V=I x R Theoretical5 0.51 v 100 5x 10-3A x 1x102 Ω .5 x 10-1 V15 1.45 v 100 15 x 10-3 A x 1x102 Ω 15 x 10-1 V25 2.45 v 100 25 x 10-3 A x 1x102 Ω 25 x 10-1 V35 3.25 v 100 35 x 10-3 A x 1x102 Ω 35 x 10-1 V45 4.40 v 100 45 x 10-3 A x 1x102 Ω 45 x 10-1 VTable III- Variation of Current with Resistance Keeping Vr Constant (Part B)I (ma) R (Ω) Vr (volts) I= Amps4.0 mA 2K 8 8/ (2 x 103) 4x10-38.2 mA 1K 8 8/ (1 x 103) 8 x10-310.5 mA 800 K 8 8/ (1 x 102) 1 x 10-213.2 mA 600 K 8 8/ (6 x 102) 1.33 x 10-219.7 mA 400 K 8 8/ (4 x 102) 2 x 10-2Table V- Variation of Voltage With Resistance Keeping I Constant (Part C)Vr (volts) R(Ω) I (ma) V=IR2.45 v 1K 2 (2x 10-3)(1x 103) = 2V7.2 v 3K 2 (2x 10-3)(3x 103) = 6V11.7 v 5K 2 (2x 10-3)(7x 103) = 18VCalculations:Table 1 - Variation of Current with Volt...

RELATED

Investigating Resistance in Ohmic and Non-Ohmic Devices - Year 9 - Report

1213 words - 5 pages . Ohm's law defines the relationship between voltage, current, and resistance in a circuit. It states that the electrical current flowing through a circuit is proportional to the voltage and inversely proportional to the resistance. Electricity is the flow of electrons. Electrons surround the nucleus of an atom; the negative charge of an electron is equal to the positive charge of a proton. An atom can gain and lose electrons, when electrons are lost

Power Tend To Corrupt And Absolute Power Corrupts Absolutely - lange arts - Essay

475 words - 2 pages electric charge. In electric circuits this charge is often carried by moving electrons in a wire 6. Resistance:  The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it: ... Whether or not a material obeys Ohm's law, its resistance can be described in terms of its bulk resistivity. 7. Power: The rate of doing work or transferring heat, the amount of

Lab twenty seven and twenty eight - goose college - electrical

1397 words - 6 pages on the inverting and noninverting inputs using ohm's law. The current for each input was calculated and averaged together to find the input bias current, the input bias current of each 741 chip was record into tables 28-2 and 28-6. 4. After that figure 28-10 was constructed and the output voltage for each op-amp was measure and recorded in tables 28-3 and 28-7. Following those values the input voltage was calculated with the equation Vout/1000=Vin

Levels Of Planning Assignment

1770 words - 8 pages Planning and organizing in respect to Wells Fargo is essential to the success of the company. The vision of Wells Fargo Bank is to move to the next stage going from "good to great," (wellsfargo.com). The organization has constantly reinvented itself through the years by creating new departments, products, services and new positions. The changes that have been made to the organization have been instrumental in the success of the company. Planning

Sun Life Case

7990 words - 32 pages pregnancies. However, exceptions to the rule exist, because it has always been restricted to ethnic Han Chinese living in urban areas. Citizens living in rural areas and minorities are not subject to the law. However, the rule has been estimated to have reduced population growth in the country of 1.25 billion by as much as 300 million people over the past twenty years. This rule has caused a disaster for female infants; abortion, neglect

This essay explains why it might be hard for parents to bring up children in the Christian faith

512 words - 3 pages In order to answer this question we must firstly look at what is done at the birth of the child. If they are baptised as a baby, they clearly include no opinion in the situation. If this child doesn't believe in this faith there will be obvious rise against this as they get older and realise what it means.Furthermore, a particularly social child who is busy quite a lot of the time may find it hard to go to Church when they are supposed to and

Vpost: Case Study

436 words - 2 pages V-post has the ability to substantially improve its profit margin, but it may difficult to realize that with the insight from Singpost, it can and will happen overnight. V-post is currently selling maximum range of approximately million bucks value of goods each day. As V-post faces many intense pressures to be more and more competitive and to increase profitability, a new perspective must be directed to the reduction and control of expenses

Bhopal Gas Tragedy

1749 words - 7 pages Disasters happen when multinational corporations though having enormous resources tend to look the other side when most of the people are uneducated and their governments do not care for them and their safety and laws are usually bent if not broken by the corporations for their benefit.On the night at around 1 a.m. on Monday, December 3, 1984, when most of the people were at home sleeping, a deadly toxic methyl isocyanate (MIC) gas leaked out

Standardized Tests: Helpful Or Harmful?

2147 words - 9 pages Before entering the "real" world and making decisions about careers and life, there is one major decision one is faced with. The question of which institution will best fit their needs to prepare them for life. There are several choices to choose from. From Ivy League Schools to State Schools as well as Historically Black Colleges and Universities the list goes on and on. These schools are viewed in society on a scale. Ivy League Schools are

American History

371 words - 2 pages Throughout American history, the development of plantations (farms) in the American colonies arrived as immigrants arrived in small farms. The American people settled on the land west of the Mississippi for many diverse reasons. As the years went, by the profit and demand for crops such as tobacco grew larger. At that time, large plantation could had over 400 acres of fields growing anything from tobacco to maize and sugarcane(in the south), as

"Love In The Time Of Cholera" By Gabriel Garcia Marquez - Stylistic Analysis

815 words - 4 pages The author uses from the first person point of view. This is viewed in the first person because the author uses pronouns such as "we" and "my" in the story. To have pronouns such as "we" and "my" is the definition of first person narrators. An example of this can be seen through the following phrase:"My mother is not an inventive or convincing liar, and the excuses which occur to her are obviously second rate."We know that the narrator is

Albinism: Characteristics And Symptoms, Causes And Treatments

355 words - 2 pages Characteristics and symptomsThe characteristics and symptoms of albinism are:- very light skin color- blondish-white colored hair- visual impairments that require glasses- tendency to sunburn easily,- hearing impairments- blood-clotting problems- red/pink eyes- Low Vision- Sensitivity to bright light and glare- involuntary eye movements- "Slowness to see" in infancy- Inability of the eyes to work togetherThese are all symptoms of albinos but an

Contemplating Racism

1124 words - 5 pages From the beginning of recorded history, possibly before then, humans have found a necessity for classifying and categorizing every aspect of life. This need for order has been used to efficiently organize and clarify the endless details on Earth. This arrangement of objects in groups has also created a very sinister and volatile mindset that some people live by. This associative manner of classification has lead to the formation of beliefs in

Family Violence

2591 words - 11 pages respond to families fear of violence and reporting mandated by law for suspected abuse.Patient barriers to admitting that they are victims of family violence include fear of retaliation for reporting the incident, low self esteem that includes the thought pattern that they deserve the abuse, fear of loss of custody and contact with family members, and the fear socioeconomically that access to care will be hard to obtain.Nursing interventions that are

Analysis Of "Spirited Away" Directed By Hayao Miyazaki

5586 words - 23 pages The story of spirited away begins with Chihiro, the protagonist of the story moving to a new house in a country town. Initially Chihiro is stubborn and reluctant about leaving her friends and old life behind. Later on the family runs into what seems like an abandoned theme park, but is actually an entrance to a spirit world and more specifically a bathhouse for gods.When Chihiro is helpless of the circumstances of loosing her parents and the