PHYSICS 180B-Question and Answers

PHYSICS 180B-Question and Answers Questions 1 through 11 are worth 4 points each. Note: All electric potential values are assumed to be measured relative to 0 at infinity. 1. True or False? If the electric field at a point is zero, then the electric potential at that point must also be zero. A True B False 2. True or False? As a particle with charge q is moved along Path 1 from Point P1 to a different point, Point P2, in an electrostatic field, the work done by the electric force is W. If this same particle had instead been moved from P1 to P2 along Path 2, which has twice the length of Path 1, then the work done by the electric force would have been 2W. A True B False 3. True or False? If a Gaussian surface S encloses an electric dipole, then the electric flux through S is 0. A True B False 4. True or False? 1 N/C = 1 V/m. A True B False 5. True or False? A battery is used to charge a parallel-plate air capacitor. If the battery is then disconnected, and a dielectric with dielectric constant equal to 3 is inserted between the plates, then the stored electrical potential energy in the capacitor will increase. A True B False 6. True or False? A single negative source charge equal to -Q is fixed in position. At a distance r to the right of this source charge, the direction of the electric potential is to the left. A True B False Physics 180B — Spring