PPT-Electricity 7-1, 7-2 Electric Charge and Electric Current

Static Electricity Static Electricity accumulation of excess electric charges on an obj pg 194 Protons electrical charge Electrons electrical charge Example of electron transfer . Electric Charges. Electrons . can. . move. from one atom to another, but protons . cannot. move .. When an atom has . gained. electrons, it has more electrons than protons, and it is . negatively. 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. . Chapter 20 & 21. Electricity. Electric charge . is a property that causes subatomic particles such as protons and electrons to attract or repel each other. . Protons have a positive charge.. Electrons have a negative charge.. The next few slides are not on your note. They are just interesting. Electric Fish, Eels, and . Rays. For humans, we know that water and electricity . are . not good to mix. For some animals, this safety concern about electricity is not a problem. In fact, they survive because they can use electricity in the . A . force. is a push or pull exerted on an object.. Energy. is the ability to do work or cause change.. Potential energy . is the stored energy that results from the position or shape of an object.. . 21-6 The . Electric . Field. Gravitational . Field. +. -e. Electric Field. +. +. +. Units . N/C. 21-6 Electric Field. https://. www.youtube.com/watch?v=xg0Lg-uSMSQ. 21-6 Electric Field: point charge. Electric Potential. QUIZ. Define electric force. What is charge measured in?. If two charges are opposite, what happens to those charges?. 4. The force between two charges can be calculated using the following equation . 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:. Chapter 21. © 2016 Pearson Education Inc.. Learning Goals for Chapter 21. Looking forward at …. how objects become electrically charged, and how we know that electric charge is conserved.. how to use Coulomb’s law to calculate the electric force between charges.. Magnetism from electricity. In 1820, Danish scientist . Hans . Christian . Oersted. discovered accidently that when electricity passed through a wire…a magnetic field was created. Which way would the compass needles point if we placed them around the wire?. Electric Current:. RECALL: In static electricity, an electric charge . stays . in one area. . In current electricity an electric charge moves through conductors along a path. Its . electrons. that move NOT . Electricity Electric Current Currents are the rate that electricity flows thru a wire 2 types of currents: Alternating Current (AC) electricity flows back-n-forth like in a house Direct Current (DC) electricity flows in one direction like in a battery Nature of science: . . Although Ohm and Barlow published their findings on the nature of electric current around the same time, little credence was given to Ohm. Barlow’s incorrect law was not initially criticized or investigated. This is a reflection of the nature of academia of the time with physics in Germany being largely non-mathematical and Barlow held in high respect in England. It indicates the need for the publication and peer review of research findings in recognized scientific journals.. 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..