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What is a field? Can we see an electric field? How do we quantify an electric field?

posted Feb 23, 2018, 11:40 AM by Barbara Fortunato   [ updated Feb 25, 2018, 5:59 AM by Barbara Fortunato ]
5: T 2/27, 7: Th 3/1 (lessons out of order - scroll up for W 2/28)

Today, we'll discover what a field is by looking a gravitational fields with which we are a little bit familiar. We'll discuss what an electric field looks like and how to represent it with electric field lines. Finally, we will learn how to characterize and quantify the strength of an electric field by expressing the force per Coulomb.
Homework:  Pd 5 only: Study for Electroscope Quiz Wednesday, February 28th.  Forensic Physics Lab Quiz also Wednesday, February 28th.  Pd 7 only: Finish FYP: Coulomb's Law #10-15.  For #14-15, try to use the principle of superposition to find the net electric field.  We'll go over this in greater detail next class.  For extra practice (optional) try Electrostatics Hewitt Packet pages 5-7.