# Lecture in Electric Charge and Electric Field | Giancoli Physics

(Last Updated On: March 21, 2020)

### Lesson Objectives – the students should be able to:

• State from memory the magnitude and sign of the charge on an electron and proton and also state the mass of each particle.
• Apply Coulomb’s law to determine the magnitude of the electrical force between point charges separated by a distance r and state whether the force will be one of attraction or repulsion.
• State from memory the law of conservation of charge.
• Distinguish between an insulator, a conductor, and a semi conductor and give examples of each.
• Explain the concept of electric field and determine the resultant electric field at a point some distance from two or more point charges.
• Determine the magnitude and direction of the electric force on a charged particle placed in an electric field.
• Sketch the electric field pattern in the region between charged objects.
• Use Gauss’s law to determine the magnitude of the electric field in problems where static electric charge is distributed on a surface which is simple and symmetrical.
• Could understand Static Electricity; Electric Charge and Its Conservation
• Solving Problems Involving Coulomb’s Law and Vectors
• Learn Electric Forces in Molecular Biology: DNA Structure and Replication
• Understand Photocopy Machines and Computer Printers Use Electrostatics

### Units of Chapter 16 – Keywords

• Static Electricity; Electric Charge and Its Conservation
• Electric Charge in the Atom
• Insulators and Conductors
• Induced Charge; the Electroscope
• Coulomb’s Law
• Solving Problems Involving Coulomb’s Law and Vectors
• The Electric Field
• Field Lines
• Electric Fields and Conductors
• Gauss’s Law
• Electric Forces in Molecular Biology: DNA Structure and Replication
• Photocopy Machines and Computer Printers Use Electrostatics