PHYS 6B Chapter Notes - Chapter 16: Electric Field, Video Lesson, Atomic Nucleus

• School: UCSB
• Department: Physics
• Course: PHYS 6B
• Professor: Roger Freedman

Document Summary

Electric charge and electric forces (lecture video: comparing gravitational force and electric force, gravity is the most important force in the universe, large scale. Always attractive a. i. a. ii. a. ii. 1. no matter the mass: electric force most important for small scale b. i. b. ii. Electric charges cannot move easily within the material: copper is a conductor c. i. Electric charges can move easily within the material: electric force is a vector. A second charged object sense this change in space, interacting with the electric field and experience an electric force. Electric field and electric force (figure 16-8) a. ii. a. ii. 1. A positive charge (q>0) experiences a force in the same direction as the electric field but a negative charge (q<0) experiences a force in the direction opposite to e a. ii. 2. a. ii. 3. Only valid if the particle of charge q is a point particle (small) a. ii. 3. a. Field lines: connecting adjacent vectors to form lines b. i. 1.