Answer Happy

tain value at a distance of 1 m. How will the electric field strength compare at a distance of 2 m from the point charge? What law guides your answer? 30. When a conductor is charged, the charge magnitude imoves to the outer surface of the conductor ce 4R from What property of charge accounts for this spreading? center of 31. Suppose that a metal file cabinet is 4R (as- charged. How will the charge concentration is zero). at the corners of the cabinet compare with -uted the charge concentration on the flat parts of Hentical the cabinetDefend your answer. ance 4R 32. Does an object with twice the electric potential of another have twice the electrical potential energy? Explain. 33. You are not harmed by contact with a charged balloon, even though its voltage is very high. Is the reason for this similar field of to why you are not harmed by the greater than-1000°C sparks from a Fourth of July tors for the way from type sparkler (like the one shown on page 404)? 34. Why does your hair stand out when you are charged by a device such as a Van de from a Graaff generator?