Homework:
- Act 17A, p.192-194, Electric Fields
- Ex 6A, p.188-196, Static Electric Fields
Basics of Electric Charge
Definition of an Electric Field:
“Any region of space where a charge feels a force.”
A positive charge will feel a force with the electric field direction
A negative charge will feel a force against the electric field direction
Fe = Eq
Electric Field
Electric Potential (Voltage)
What is Voltage?
Uniform Electric Field
E = V/d
Uniform Electric Fields
Uniform Electric Field
E = V/d
E: Electric Field (Vm-1 or NC-1 depending on the context
used)
Electric Force
Fe = Eq
Fe: Electrical Force (N)
q or Q: Charge (C)
Electrical Potential Energy
As the charge falls through the Electric Field, the electrical potential energy transforms into kinetic energy.
Ek = Ep
½ mv2 = Vq
Electron Gun
(Cathode Ray Tube)
A Tube Screen TV is an Electron Gun
Cathode Ray Tube and how it works
Electron Gun
Cathode Ray Tube (CRT)
Discovery of the Electron: Cathode Ray Tube Experiment
Cathode Rays Leads to Thomson's Model of the Atom
Parker Solar Probe - Use of CRT
Millikan's Oil Drop Experiment
Charge of an Electron - Millikan's Oil Drop Experiment
