PHYS4210 Quiz: Electromagnetic Theory - Prof. James J. Napolitano, Quizzes of Physics

Download PHYS4210 Quiz: Electromagnetic Theory - Prof. James J. Napolitano and more Quizzes Physics in PDF only on Docsity! Name: PHYS4210 Electromagnetic Theory Quiz 23 Feb 2009 This is a closed book quiz! Write the best choice in the space next to the question. 1. The electric field E from an isolated point charge q > 0 A. points radially outward and falls like 1/r. B. points radially outward and falls like 1/r2. C. points radially inward and falls like 1/r. D. points radially inward and falls like 1/r2. E. falls like 1/rn+1 for a multipole of order n. 2. A charge q moves at some velocity v relative to a wire carrying current but no net charge. It feels a force from the current in the wire because A. Coulomb’s law implies a force field when combined with special relativity. B. magnetism is a fundamental force of nature, and must be postulated. C. the divergence of the magnetic field is zero. D. the curl of the electric field is zero. E. all moving charges experience and electromotive force. 3. Which of the following statements is false? A. The electric field E is a polar vector in three-dimensional space. B. The magnetic field B is an axial vector in three-dimensional space. C. The inner product E · B of electric and magnetic fields is invariant under both spatial rotations and Lorentz transformations. D. The electric field E and magnetic field B are three-vector components of Lorentz transformation four-vectors. E. The electric field E and magnetic field B are all that we need to specify the electromagnetic field tensor F µν in any particular reference frame.