PPT-Chapter 27: Current and Resistance

Reading assignment Chapter 27 Homework 271 due Monday Feb 27 OQ1 5 14 Homework 272 due Wednesday March 1 OQ3 OQ6 15 21 25 26 31 33 39 44 48 53 Begin our study of charges . &. Circuits. Indicators and Objectives. PS-6.6: Explain the relationships among voltage, resistance, and current in Ohm’s law.. PS-6.9: Compare the functioning of simple series and parallel circuits.. AP Physics C. Internal Resistance. All components in a circuit off some type of resistance regardless of how large or small it is. Batteries especially have what is called an . internal resistance. , . Comparing shocks from static electricity and electric currents is like comparing apples and oranges, they are similar but quite different at the same time.. Every year many people are injured and sometimes killed from electrocution as even small amounts of electric current can be lethal. . 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. Electric Current. Electric current . – The net movement of electric charges in a single direction through a wire or conductor.. Voltage difference . – The force that causes electric charges to flow; charges flow from high voltage to low voltage.. Background and concepts. 2. Microhams 2010 Technician. Radio and Electronic Fundamentals. 3. Ohm’s Law and Power Calculations. E. I. R. P. I. E. E=Voltage (Volts). I=Current (Amps). R=Resistance (Ohms). Simple meaning: exposed to the oil (Be endurable). Detail meaning: when Contact with oil. change of the form , Decrease . of physical . nature (about rubber ,plastic)resistance. Oil-resistance. Materials. Autor: Ziva Domingos (Ph.D). E-mail: . zivado@hotmail.com. . 1. RESISTANCE AND LIBERATION HERITAGE NATIONAL SUMMIT. 27 November 2017. Saint George Hotel, Irene, Pretoria, South Africa. Considering its road to independence and the independence of some SADC Countries, Angola has a rich Restance and Liberation Heritage, such as:. Electric Current Notes. Key Terms. Voltage . produces a flow of charge, or . current. , within a conductor. . The . flow is restrained by the . resistance . it encounters. . The . rate at which energy is transferred by electric current is . Electric Current - . Flow of electrons through a material. Electrical Potential – . Similar to potential energy . Remember PE is . llifting. something higher against the force of gravity gives it greater potential to do work, increasing its potential energy.). Electric Current Mr. Charge’s Journey Problem #1 The amount of charge that passes through the filament of a certain light bulb in 2 seconds is 1.67 C. A) What is the current in the light bulb? B) What is the number of electrons that pass through the filament in one second? No Class on Wednesday March 8. Labs taught by Dr. . Mahes. on Monday and Tuesday.. No quiz on . Friday, March 10. Exam 2 on Friday, March 24, study guide posted online. Current from a battery flows steadily in one direction (direct current, DC). Current from a power plant varies sinusoidally (alternating current, AC).. NOTE: I will be plugging grades now, if you have tasks not turned in including projects, please turn them in ASAP before the end of the Second Period today.. . Those who have finished all tasks can move on to today’s tasks.. 3.2.5 . E.M.F.. and Internal Resistance. A source of electrical potential energy, such as a battery, provides an electromotive force (. e.m.f. .) to drive an electron current through the circuit. .