Download 16-8 Field Lines

16-8 Field Lines
16-9 Electric Fields and Conductors
16-10 Gauss’s Law
Objectives:
1. Summarize the properties of field lines.
2. Explain the patterns of electric fields in terms of conductors.
3. Explain the key components of Guass’s Law.
Homework: 23-38 even, 43-49 odd pp. 466-467
Formula Search –Find all formulas state the units and purpose for making
calculations.
Vocabulary to Know:
Vector
Electric field
Forces
Lines of Force
Test charge
Positive charge
Negative charge
Electric dipole
Repulsion
Gravitational Field
Force per unit mass
Conductors
Free electrons
Net charge
Static electric fields
Electric flux
Gauss’s law
Area
16.7 The Electric Field:
1. Why are gravitational and electrostatic forces not considered to be contact forces?
2. Describe an electric field
3. How are test charges used in relation to an electric field?
4. Define an electric field. (do not forget units and quantity type)
5. How do we measure the electric field at any point in space?
6. On what does the electric field depend on and not depend?
7. How does an electric field apply to a photocopy machine?
8. Explain the superposition principle.
16-8 Field Lines:
1. Why is an electric field a vector quantity?
2. What process can be used to visualize the electric field between two carges?
3. For what, do electric field lines indicate?
4. In what direction do electric field lines move?
5. Compare and contrast field lines near and at a distance to the charges.
6. Draw and explain four different electric field lines for four arrangements of charges.
7. Summarize the properties of field lines.
8. How can the “field concept” be applied to gravitational force?
16-9 Electric Fields and Conductors:
1. Describe the electric field in a conductor.
2. What consequences exist concerning electric fields in conductors?
3. State a related property of static electric fields and conductors.
4. What happens to electric fields in nonconductors?
5. How does Faraday’s cage work?
16-10 Gauss’s Law:
1. What is the relationship of Coulomb’s to Gauss’s law?
2. Explain the concept of electric flux.
3. Explain how electric flux has a simple intuitive interpretation in terms of field lines.
4. How does Gauss’s law apply to any surface?