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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
- Atom, Electric charge, Fundamental physics concepts, 0.10 nm, 2009 Week, 0.096 nm