PHYS 0175 1st Edition Lecture 13Outline of Last Lecture II. Electric Potential of point chargeIII. Electric Potential UnitsIV. Three equidistant alpha particlesV. Potential of a line of chargeVI. Finding potential from electric fieldVII. Electric potential difference b/w two || platesVIII.Equipotential SurfacesIX. Electric Potential just outside a conductor Outline of Current Lecture X. Electric PotentialXI. EquipotentialXII. Electric field just outside conductorXIII. A conductor is an equipotential objectXIV.Electric Potential inside a cavity in a conductorXV. Electric potential due to conducting sphereXVI.Curvature of charge density in a conductorXVII. CapacitorXVIII. Parallel Plate capacitorCurrent LectureII. Electric Potentiala. Potential is work donei. By external agent to bring unit charge from infinityii. Independent test q0III. Equipotentiala. When all q at restb. Surface conductor equipotential (no W done by electric force)IV. Electric field just outside conductora. Electric field _|_ to surface ust outside conductor at every pointV. A conductor is an equipotential objecta. Va-Vb=integratl from A to B(E dot dl)b. Two points inside conductor-difference=0(because charges move to surface, leaving zero net charge on inside)c. If on surface-difference still zero(equipotential, but also the field is _|_ so dot product=0)VI. Electric Potential inside a cavity in a conductora. if conductor with cavity has no q-net, then there can be no net charge anywhere on surface of cavity1. region of cavity is all equipotentalVII. Electric potential due to conducting spherea. Integrate-up to when it is inside to the surface, to when it goes beyond the surfaceVIII.Curvature of charge density in a conductora. The higher the curvature, the higher the area charge density sigmaIX. Capacitora. Pair of conductors that are insulated from each otheri. Positive and negative net qii. Work done moving charges against potential difference-electric potential energy storedX. Parallel Plate capacitora. Two parallel
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