1 / 11

Understanding Electric Charges and Forces: Key Concepts and Calculations

This chapter focuses on fundamental concepts of electric charges and forces in electrostatics. It examines the properties of charges when materials such as silk are rubbed against glass, identifies the results of charging by induction, and compares the characteristics of electrons and protons. It also explores the behavior of charges on conducting spheres and analyzes the electric force between them, considering various scenarios and distances. Additionally, calculations involving electric fields and the net electric force acting on charges are discussed, providing a comprehensive overview for students.

faolan
Télécharger la présentation

Understanding Electric Charges and Forces: Key Concepts and Calculations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 17 Review

  2. 1. When silk is rubbed onto a glass rod, this leaves a _______________ charge on the glass rod. 1. positive 2. negative 3. neutral

  3. 2. Charging by induction is when a charged object touches an uncharged object. 1. True 2. False

  4. Compare an electron and a proton 1. They have the same mass but opposite charge. 2. The proton more massive and is positive while the electron is negative. 3. They electron is more massive and is negative while the proton is positive. 4. none of the above

  5. 4. Two identical conducting spheres have charges of -15 x 10^-6 C and + 7 x 10^-6 C on them. When touched together and the separated the charge on each sphere is what? 1. + 22 x 10^-6 C 2. - 8 x 10^-6 C 3. -4 x 10^-6 C 4. 2.5 x 10^-6 C

  6. 5. If these two spheres are a distance of 35 cm apart, what is the electric force between them? 1. 1.17 N 2. .411 N 3. .000117N 4. .0117 N

  7. 6. Three charges rest on the x-axis. Q1 is at the origin (+4 uC), Q2 is at .4m (-3uC), and Q3 is at -.6 (- 8uC). What is the net electric force acting on Q2. • 1. .891 N R • 2. .459 N R • 3. .891 N L • 4. .459 N L

  8. 7. Two charges that have values of +8 uC and +12 uC are a distance of 40 cm apart. How far from the +8 uC charge is Q3 if it experiences zero net force? • 1. 1.78 m • 2. 2.17 m • 3. .179 m • 4. .220 m

  9. 8. What is the electric field produced by a 8 nC charge a distance of .75 meters away? • 1. 128000 N/C • 2. 128 N/C • 3. 1.42 N/C • 4. 40.5 N/C

  10. 9. All the charges are free to move on an insulator. • 1. True • 2. False

  11. 10. The E-Field inside a conductor is infinite. • 1. True • 2. False

More Related