Phy 102 Chapter 15 Test Bank Solution Manual (Graded A+)

Phy 102 Chapter 15 Test Bank Solution Manual (Graded A+) Five particles are shot from the left into a region that contains a uniform electric field. All the particles have the same mass. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge of -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. In in which direction does the electric field point? a. toward the bottom of the page b. out of the page, toward the reader c. toward the right of the page d. toward the left of the page e. toward the top of the page - Answers a. toward the bottom of the page Five particles are shot from the left into a region that contains a uniform electric field. All the particles have the same mass. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge of -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. Which path would be followed by a helium atom (an electrically neutral particle)? a. path 1 b. path 2 c. path 3 d. path 4 e. path 5 - Answers c. path 3 (straight line) Electric charges of opposite sign a. repel each other b. None of these is correct c. attract each other d. exert no forces on each other e. also have the same magnitude - Answers c. attract each other Electric charges of the same sign a. attract each other b. repel each other c. None of there is correct d. also have the same magnitude e. exert no forces on each other - Answers b. repel each other You are standing on a plastic bench that insulates you from your surroundings. Both you and the helium filled balloon that you are holding are electrically neutral. You now rub the balloon against your sweater, so that the balloon becomes negatively charged. You then let the balloon float away. You are left a. electrically neutral b. with a negative electric charge c. with no negative electrically charged particles in your body d. with a positive electric charge - Answers d. with a positive electric charge The electric field associated with a uniformly charged hollow metallic sphere is greatest at: a. the sphere's outer surface b. infinity c. the center of the sphere d. the sphere's inner surface - Answers a. the sphere's outer surface Five particles are shot from the left into a region that contains a uniform electric field. All the particles have the same mass. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge of -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. Which path would be followed by a charge +6Q? a. path 1 b. path 2 c. path 3 d. path 4 e. path 5 - Answers e. path 5 (curve at the bottom) An electric insulator is a material: a. containing no electrons b. that has more electron than protons on its surface c. must be a crystal d. through which electrons do not easily flow e. cannot be a pure chemical element - Answers d. through which electrons do not easily flow The direction of the electric field at a point is the same as a. None of these is correct b. the force on a neutron placed at that point c. the force on a hydrogen molecule placed at that point d. the force on an electron placed at that point e. the force on a proton placed at that point - Answers e. the force on a proton placed at that point Distinguish between a conductor and an insulator. a. A conductor can be plastic, wood, or glass; an insulator is always metal b. A conductor repels charged objects; an insulator attracts them. c. A conductor cannot produce static electricity; an insulator can d. A conductor allows electrons to move easily through it; an insulator does not - Answers d. A conductor allows electrons to move easily through it; an insulator does not Who is credited with the discovery that electric charge resides on the surface of conductors? a. Michael Faraday b. Benjamin Franklin