[PHYS 102] - Midterm Exam Guide - Comprehensive Notes for the exam (18 pages long!)
6 Feb 2017
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Electromagnetic interactions involve particles that have electric charge, an attribute that is as fundamental as mass. Electrically charged objects are accelerated by electric forces. Charge is quantized and obeys a conservation principle. When charges are at rest in our frame of reference, they exert electrostatic forces on each other. Electrostatic forces are governed by a simple relationship k(cid:374)o(cid:449)(cid:374) as coulo(cid:373)(cid:271)"s la(cid:449) a(cid:374)d a(cid:396)e (cid:373)ost conveniently described by using the concept of electric field. When something is able to attract other objects, it has a net electric charge, or it has become charged. Electrostatics are the interactions between electric charges that are at rest. There are exactly two kinds of electric charge: the kind on the plastic rod rubbed with fur (negative, the kind on the glass rod rubbed with silk (positive) Two positive charges or two negative charges repel each other. A positive charge and a negative charge attract each other.
