PPT-Resistors How can we intentionally change the amount of resistance in our circuit?

Resistance Voltage Current is a function of these two What if we want to control the current or alter the voltage Change the Resistance How do we do this Which of the three parts of Ohms triangle do we have the most control over. a) Find the currents . i. 1. and . i. 2. . in the circuit in the figure. . b) Find the voltage . v. o. .. c) Verify that the total power developed equals the . total power dissipated.. Quiz 2. The current . Series Circuits. Take a series circuit with two resistors. Since each is the same resistance, they use up the same amount of voltage, . 6V. Therefore the voltage at point A is . 6V. Series Circuit. We can rearrange the circuit as shown on the right. A) 1 m/s.. B) 1 km/s.. C) 10 m/s.. D) the speed of light.. E) 1 mm/s.. 2) When a current flows through a metal wire, the moving charges are. A) positive metal ions.. B) negative metal ions.. C) only electrons.. Chapters 18 - 19 . Chapter 18 Topics:. Electric Currents. The Electric Battery. Electric Current. Ohm’s Law: Resistance and Resistors. Resistivity. Electric Power. Chapter 19 Topics:. DC Circuits. EMF and Terminal Voltage. Resistors in Series. PHET simulation. Resistors in Series. Total resistance for a circuit in series (. Rtotal. ). . Rtotal. = R1 + R2 + R3 + …. Ohm’s Law (V = I x R) . The R typically means total Resistance (. matter. . . Matter. is anything that has mass (weight) and occupies space. . All matter is made up of . molecules. . . that have a certain number of atoms.. Atom. . is broken down even further into a . What is a Breadboard?. Sometimes called a proto-board. Reusable platform for temporarily built electronic circuits. Why Breadboard?. It takes less time (and money) to breadboard a circuit than to design and fabricate a printed circuit board (PCB. © 2012 Project Lead The Way, Inc.. Principles Of Engineering. What is a Breadboard?. Sometimes called a proto-board. Reusable platform for temporarily built electronic circuits. Why Breadboard?. It takes less time (and money) to breadboard a circuit than to design and fabricate a printed circuit board (PCB. Total Resistance. Current in a Series Circuit. Voltage Division. Resistors in Series. When Resistors are wired in Series, their Resistances Add Up.. The Total Resistance of a series circuit is the Sum Total of all the resistor values.. Vocabulary. Electric . charge. (q) – exists due to excess or deficient electrons on an object. Charge comes in two kinds: positive and negative. . The unit of charge is the coulomb.. Electric . current. Dr. Jeanne . Pitz. 1. Electrical Network Analysis. Analysis and design of RC, RL, and RLC electrical networks. Sinusoidal steady state analysis of passive networks using phasor representation. mesh and nodal analyses . This page is intentionally left blank for ease of double-sided printing. ACTION GUIDE www.ejusa.org resistors. A resistor, like batteries and lights, can also be present in an electrical circuit. A resistor limits the flow of electricity in the circuit. Like rocks in a pipe that slow the flow of water, a resistor will limit the flow of electricity. A variable resistor is made of a piece of metal that can change in length. As the length of the resistor changes, so does the resistance in the same direction. . SYMBOLS OF THE COMPONENTS. Cells in series & parallel. An open & closed switch. An ammeter. A voltmeter. Resistors in series & parallel. Bulbs in series & parallel. A variable resistor.