PHYS 1147 Chapter 11: Chapter 17
10 Mar 2017
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Document Summary
Recall: change in potential energy between any two points. Electric potential: electric potential energy per unit charge. Electric eld equal to rate at which the electric potential decreases over distance in that direction. Breakdown: odd free electron accelerated to ke to knock out electrons out of oxygen and nitrogen in the air. Equipotential lines: all points on line have same potential must be perpendicular to the eld potential di erence is zero if connected to a battery, one plate will be negative and one will be positive, with same. Capacitor: device that can store electric charge, and normally consists of two conducting objects placed near each other but not touching, store charge for later use, also block surges of charge and energy to protect circuits potential. Capacitance: unit of farands [f], constant of proportionality. Charged capacitor stores electric energy by separating + and - charges. Energy stored is equal to work done to charge it.
