Chapter 15: Electric charge, forces and fields (Electrostatics)


Study guide - title

Tutorial (Univ. of California) - title

Video (UC Berkley, Physics 10) - Electricity & Magnetism



Topic 15.1, 15.2 & 15.3: Electric charge and Coulomb’s Law


Objective(s):
Students should understand the concept of electric charge, so they can:
  1. Describe the types of charge and the attraction and repulsion of charges.
  2. Describe polarization and induced charges.

Students should understand induced charge and electrostatic shielding, so they can:
  1. Describe the process of charging by induction.
  2. Explain why a neutral conductor is attracted to a charged object.

Students should understand Coulomb’s Law and the principle of superposition, so they can:
  1. Calculate the magnitude and direction of the force on a positive or negative charge due to other specified point charges.
  2. Analyze the motion of a particle of specified charge and mass under the influence of an electrostatic force.

Video tutorial (Monterey) - Electric charges & Coulombs law



Video tutorial (Monterey) - Electric potential

Video tutorial (Monterey) - Electrostatics with conductors

Tutorial (Khan Academy) - Electrostatics: Intro to charge & Coulomb's law

Tutorial (Khan Academy) - Electrostatics: Part 2

Tutorial (Khan Academy) - Electrical potential energy

Tutorial (Khan Academy) - Voltage

Tutorial (Khan Academy) - Capacitance

Tutorial (Khan Academy) - title

Video (MIT) - Charge and Coulombs law

Video (MIT) - Electric fields and dipoles

Video (MIT) - Electrostatic shielding

Video (MIT) - Electrostatic Potential and Electric Energy

Video (Mechanical universe) - #28 Static electricity

Video (MIT demo) - Faraday's Cage

Topic 15.4: Electric field (including point charges)


Objective(s):
Students should understand the concept of electric field, so they can:
  1. Define it in terms of the force on a test charge.
  2. Describe and calculate the electric field of a single point charge.
  3. Calculate the magnitude and direction of the electric field produced by two or more point charges.
  4. Calculate the magnitude and direction of the force on a positive or negative charge placed in a specified field.
  5. Interpret an electric field diagram
  6. Analyze the motion of a particle of specified charge and mass in a uniform electric field.

Animation - 3-D Electrostatic field

Video tutorial (Monterey) - Electric fields

Virtual lab (PhET @ Colorado) - Charges & Fields


Virtual lab (PhET @ Colorado) - Electric field hockey

Virtual lab (PhET @ Colorado) - Electric field of dreams

Video (Mechanical universe) - #29 Electric field


Topic 15.5: Conductors and electric fields


Objective(s):
Students should understand the nature of electric fields in and around conductors, so they can:
  1. Explain the mechanics responsible for the absence of electric field inside a conductor, and know that all excess charge must reside on the surface of the conductor.
  2. Explain why a conductor must be an equipotential, and apply this principle in analyzing what happens when conductors are connected by wires.

Students should be able to describe and sketch a graph of the electric field and potential inside and outside a charged conducting sphere.


Website - Water flow analogy of electric current


2. Electric potential (including point charges)


b) Students should understand the concept of electric potential, so they can:
(1) Determine the electric potential in the vicinity of one or more point charges.
(2) Calculate the electrical work done on a charge or use conservation of energy to determine the speed of a charge that moves through a specified potential difference.
(3) Determine the direction and approximate magnitude of the electric field at various positions given a sketch of equipotentials.
(4) Calculate the potential difference between two points in a uniform electric field, and state which point is at the higher potential.
(5) Calculate how much work is required to move a test charge from one location to another in the field of fixed point charges.
(6) Calculate the electrostatic potential energy of a system of two or more point charges, and calculate how much work is required to establish the charge system.

2. Capacitors


a) Students should understand the definition and function of capacitance, so they can:
(1) Relate stored charge and voltage for a capacitor.
(2) Relate voltage, charge, and stored energy for a capacitor.
(3) Recognize situations in which energy stored in a capacitor is converted to other forms.

b) Students should understand the physics of the parallel-plate capacitor, so they can:
(1) Describe the electric field inside the capacitor, and relate the strength of this field to the potential difference between the plates and the plate separation.
(4) Determine how changes in dimension will affect the value of the capacitance.




Study guide - title

Tutorial (Univ. of California) - title

Mini lab - title

AP lab - title

Virtual lab (PhET @ Colorado) - title

Video - title

Video (Eureka) - title

Video (MIT) - title

Video (UC Berkley, Physics 10) - title

Video (The Mechanical Universe) - title