RC time constant of a capacitor Essay Example | Topics and Well Written Essays - 1000 words - 1

RC time constant of a capacitor - Essay Example At the same time that happens, the upper plate receives electrons making it of a positive charge (Platt). This process is not instantaneous; it takes time. At the beginning, current is high and begins to decrease as charge accumulates on the plates. At the beginning there is no voltage across capacitor but increases as charging continuous. capacitor voltage Vc, increases towards Vb but asymptotically. During the charging and discharging process, exponential laws as below are adhered to Using the requirements provided the circuit was connected as shown above using a 470Â µF and 80,000á ½ ¨ resistor. Measurements using the multi-meter was taken for time intervals of 10seconds. The results of Vc, Vemf-Vc, Ln(Vemf – Vc/Vemf) were recorded in a table 1. At this moment the capacitor was fully charged. The value of voltage across V0 was recorded. The second part of the experiment began by undoing the switch from each procedure above and the timing process was done and table 2 was filled with relevant data Vc, Ln(Vc/V0), and time in table 2. Logger pro was opened and voltage adjusted to zero. Time constant was set to 150seconds. Capacitor was recharged holding the voltage probe across capacitor. Switch was flipped to B and hit collect on logger pro. Natural exponent function was selected on the logger pro. Data obtained was then recorded. The practical objective were met and the practical was successful. Data used for calculation was obtained from finding the average of the data obtained from trials 1 and 2. When a capacitor is connected to a battery, it charges and the rate at which it happens is dependent on the time constant. By opening the switch, the capacitor discharges. The theoretical value of the time constant differ from the practical value obtained after plotting the graph, finding gradient and calculating for time constant. This is due to human measurement errors, faulty components, and faulty meters. Timing in this experiment is the

Module 7 Case Study Example | Topics and Well Written Essays - 250 words

Module 7 - Case Study Example Both these can be utilized to effectively achieve the objective at hand. 2. Being a group product manager at Proctor & Gamble there are several ways in which the information available from the store audit can be effectively utilized to increase overall laundry detergent sales and increase overall productivity. As a group product manager it is my responsibility to keep in mind that whether the goal is to shrink or comply with regulatory requirements a thorough store level audit process is significant to protect and authenticate company assets and facilitate the reporting process. Furthermore it also provides the administration with real time information that plays a big role when it comes to concentrating on identifying and resolving issues. The value of store audit information is reflected in the core advantages that result from the use of audit technology that enhance major aspects of a business. These being, enhanced audit productivity, improved operational effectiveness and superi or reporting capabilities. Reference Malhotra, N K (2010), Marketing Research, An Applied Orientation, 6th edn, Pearson Education, Upper Saddle River, New Jersey