## Chapter 25: Electric Potential

 What determines the amount of potential energy a charge possesses in the vicinity of another charge? What is voltage? How do you calculate the voltage near a point charge? What is the significance of the zero point of voltage? How is the voltage from a collection of point charges calculated? Describe the significance of an equipotential surface. What can you say about the electric field at such a surface? Describe the potential of an electric dipole Calculate the voltage near a line charge. ... near a uniformly charged disc. How do you calculate the electric field from the voltage? Describe the voltage inside an isolated charged conductor. Develop an expression for the voltage of a charged conducting sphere. How is it that a bird can sit on a high voltage transmission line and not be shocked? How does a Van de Graaff generator achieve such high voltages? Why is it dangerous to stand under a tree during a thunderstorm? Why is the lightning more likely to strike the tree than flat earth? Why does the question "How much voltage does it take to be a shock hazard?" not have a straightforward answer? What is the best measure of the severity of a shock? *Electric potential energy *Voltage *Voltage from point charge *Zero of electric potential *Voltage from multiple charges *Equipotential lines *Electric dipole potential *Torque on a dipole *Energy of a dipole *Potential of line charge *Potential of disc charge *Electric field from voltage *Voltage from electric field *Voltage inside conductor *Potential of conducting sphere *Bird on high voltage wire *Van deGraaff Generator *Lightning *Electric shock
Index
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