Green Items that must be covered for the national test Blue Items from educator.com Red Items from the 8 th edition of Serway 25 Electric Potential 25.1 Electric Potential and Potential Difference 25.2 Potential Difference in a Uniform Electric Field 25.3 Electric Potential and Potential Energy Due to Point Charges 25.4 Obtaining the Value of the Electric Field from the Electric Potential 25.5 Electric Potential Due to Continuous Charge Distributions 25.6 Electric Potential Due to a Charged Conductor 25.7 The Millikan Oil-Drop Experiment 25.8 Applications of Electrostatics 4. Fields and potentials of other charge distributions a) Students should be able to use the principle of superposition to calculate by integration: (1) The electric field of a straight, uniformly charged wire. (2) The electric field and potential on the axis of a thin ring of charge, or at the center of a circular arc of charge. (3) The electric potential on the axis of a uniformly charged disk. b) Students should know the fields of highly symmetric charge distributions, so they can: (1) Identify situations in which the direction of the electric field produced by a charge distribution can be deduced from symmetry considerations. (2) Describe qualitatively the patterns and variation with distance of the electric field of: (a) Oppositely-charged parallel plates. (b) A long, uniformly-charged wire, or thin cylindrical or spherical shell. (3) Use superposition to determine the fields of parallel charged planes, coaxial cylinders or concentric spheres. (4) Derive expressions for electric potential as a function of position in the above cases. Electric Potential, Part 1 86:57 (4 days?) * The potential difference between two points A and B, written as Vb – Va, is equal to the work done in moving a unit charge from A to B. * If a uniform E-field exists in a region of space, the V b – V a = - E·d, the dot product of the vector E and the vector d from A to B. * In a parallel plate capacitor, the potential difference between the plates is equal to Ed, where E is the electric field between the plates and d is the separation between the plates. The positive plate is at a higher potential than the negative plate. http://sdsu-physics.org/physics180/physics196/Topics/electricPotential.html AP Physics C (Electromagnetics) Chapter 25 Class work