PPT-Electric Current, Resistance and Ohm’s law

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 . A. little. chemistry. . . . All. . matter. . . . Atoms. . are. is m. a. de. . up. . of ato. m. s. made. . of. . pr. o. ton. s. ,. n. e. utr. o. ns,. . a. n. d. . ele. c. tro. n. s. . BY HEI MAN KWOK 12N03S . 5.1 electric potential difference, current and resistance. Model of electric conduction in a metal – energy transfer . Charge carriers have kinetic energy . These collide with lattice ions . Lesson 5. Resistance. The amount of current flow in a circuit, and the amount of energy transferred to any useful device, depends on two things; . The potential difference of the power supply. The nature of the pathway through the loads that are using electric potential energy. . 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.. Key Points. Ohm’s Law. Resistivity. Electric Power. Alternating Current. References. . 18-1,2,3,4,5,6,7. Electric current is the rate of flow of charge through a conductor:. Unit of electric current: the ampere, . SPS10. Students will investigate the properties of electricity and magnetism.. Investigate static . electricity in terms of: friction, conduction, and induction.. Explain the flow of electrons in terms of:. 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 . Reading assignment. : Chapter . 27. Homework 27.1, due Monday, Feb. 27:. OQ1, 5, 14 . Homework 27.2, due Wednesday, March 1:. OQ3, OQ6, 15, 21, 25, 26, 31, 33, 39, 44, 48, 53. Begin . our study of charges . 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? Still waiting for . scantron. results…. Electric Current. Is the . flow of electric charge. (i.e. charged particles, usually electrons) . between regions of different electric potential. . . When there is no potential difference, there is no charge flow, no current.. 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. . Static Electricity. Static Electricity-. accumulation of excess electric charges on an obj. pg. 194. Protons = + electrical charge. Electrons= - electrical charge . Example of electron transfer: . 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..