16. (A) If two 100 Q resistors are placed in parallel, their total resistance changes by what factor compared to the same two 100 Q resistors placed in series with each other: a. the same b. twice c. half d. one quarter 17. (T) How will the current in the first ammeter compare with the reading in the second? a. A, has a current reading while A has a reading of zero. b. A, and A2 are equal. C. An is less than A2. d. An is greater than A2. 18. (K) What is the direction of the magnetic field outside a bar magnet? a. Out of the north and off into space. b. Out of the south into the north. c. Out of the north into the south. d. Out of the south and off into space. 19. (A) If the compass in the diagram below is placed directly above the conductor when the switch is closed, in what direction will the compass point? a. North b. South C. East d. West 10 20. (K) A person exerts a downward force on a 15 kg curling stone resting on the ice. If the stone has experienced a normal force of 200 N [Up], how hard is the person pushing down? a. ON b. 53 N C. 147 N d. 200 N