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Unformatted text preview: Physics 1302 Spring 2009 Week 2 Discussion MC1 Electric field lines: A) are trajectories of a test charge; B) are vectors in the direction of the electric field; C) form closed loops; D) cross each other in the region between two point charges; E) are none of the above MC2 Positive charge + Q is uniformly distributed on the upper half of a semicircular rod and negative charge Q is uniformly distributed on the lower half. What is the direction of the electric field at point P, the center of the semicircle? (A) (B) (C) (D) (E) MC3 Two charged particles are arranged as shown. In which region could a third particle, with charge + 1 C, be placed so that the net electrostatic force on it is zero? (A) I only (B) I and II only (C) III only (D) I and III only (E) II only Long Group Problem Week 2: A molecule of dihydrogen oxide (water) has an elec- tric dipole moment because oxygen is more electronegative than hydrogen, so the covalently bonded electrons are more likely found in the vicinity of the oxygen atom than the hydrogen...
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- Spring '08