Essays on Ohm

The energy stored in a capacitor

1. The energy stored in a capacitor measured in Jules is equal to the required work to charge the capacitor. The capacitor has a capacity "C" with a charge +q in one plate and –q in the other plate . The two plates have a separation "d." The movementof a small charge dq from one plate to another, it is necessary to execute a work dW. The expression is the following: C = q/V dW = V * dq dW = q/C*dq Equation 1. 2. To move a charge dq from one plate to another is required to execute work and part of ...

Movie Review: THX-1138

THX-1138, the main character in the film THX-1138, works as a magnum operator in cell 94107. He was literally created to manipulate the magnum along with other people in his society. In general, the THX-1138 movie is one of the best films that the creator of Star Wars, George Lucas, has ever scripted and directed. In 1976, Lucas produced Electronic Labyrinth: THX-113: 4EB, a short film that won various awards and introduced Lucas to movie fans globally (“George Lucas Biography”). The success of Electronic Labyrinth impressed the director of The Godfather, Frances Coppela, who urged Warner Brothers to provide ...

Introduction

The relation between the potential difference, electric current, and resistance are represented in the Ohm Law. The Ohm Law consists in the direct relation between the potential difference and the electric current of a basic circuit, where the resistance is the constant value in the relation. Mathematically speaking the Ohm Law is a first-grade equation where the potential difference is the dependent variable, the electric current the independent variable and the resistance a constant value. With a deep analysis of the circuit, the resistances are components inside the circuit that difficult the path of the electric current through the ...

Lab Experiment #4: Fundamentals of Electric Circuits

Goals The main objective of this laboratory practice is to gain understanding on the basic laws that describe electric circuits and their application.

Background and Theory

Ohm’s Law. According to Alexander and Sadiku (2013), “Ohm’s Law states that the voltage v across a resistor is directly proportional to the current i flowing through the resistor” (p. 31). The constant of proportionality is the element’s resistance, R, which depends on several factors that will not be analyzed in this report. The equation for Ohm’s Law is then: v=iR (where v: voltage, i: current and R: resistance). The units for ...

Abstract

The Fourth Amendment Act was set in place in the US constitution to ensure and assure privacy for the citizens. The Act and its application have been subject to scrutiny as to whether it is a broken promise or not. Terrorist activities have interfered with security globally and in the US particularly since the 9/11 attacks that claimed the lives of many Americans not to mention other victims. War on terrorism has been beefed up globally for the purpose of combating the crime. However, the said war on terror has been used as an excuse for the intrusion to ...

Vaping vs. Tobacco

Introduction Vaping vs. Tobacco

The financial issue is one of the major areas that are highly debated when discussing vaping and tobacco. Various states have large tracks of a tobacco plantation and that the amount of tobacco sold forms more substantial portion of the country's revenue. Smoking is known to create tremendous wealth, majorly for the government, which has been the leading cause of all conflict of interest. Government revenue is, to a greater percentage, connected to cigarette sales. Tobacco forms a larger part of revenue for huge transnational industries, which results to external factors having a strong influence ...

DC Power Supply

DC power supply is a significant element in most electronics and electrical work. Its main function is to supply a desired value of direct current to a specific load. It is imperative that the appropriate amount of DC power is supplied to electrical load for correct functioning without damage. As a consequence, DC power supply is significant in supplying the desired amount of direct current power. In this project, a 5 V DC switching power supply will be designed. The power supply will be designed to drive a 50 ohm load with less than 5 percent ...

555timer

Introduction The 555 integrated circuit (chip) is used in a variety of timer and oscillator applications. A 555 timer is used to provide time delays and oscillations and as a flip-flop element. The device has additional terminals provided to trigger or resetting purpose (Nair, 2006). During the time delay operation mode, time is precisely controlled by an external resistor and capacitor. While working as an oscillator, the duty cycle and the frequency are accurately regulated by two external resistors and a capacitor (Brumbach, & Clade, 2003). 555 is triggered and reset on falling waveforms. A typical 555 timer IC is ...