Physical Science

1. Physical Science Take 10 Week #9 SPS 10-electromagnetism

2. Day # 1 Question 1 Which of the following conditions results in the buildup of static charge on an object? A. when neutrons out number electrons B. when there are more protons than neutrons C. when there are more electrons than protons D. when all neutrons have been removed from the object

3. Day # 1 Question 2 What is the voltage across the terminals of a 23 Ωresistor that has 0.065 A of current flowing through it? A. 0.0028 V B. 0.097 V C. 1.5 V D. 350 V

4. Day #1 Answers 1. Which of the following conditions results in the buildup of static charge on an object? C. when there are more electrons than protons 2. What is the voltage across the terminals of a 23 Ω resistor that has 0.065 A of current flowing through it? C. 1.5 V

6. Day # 2 Question 1 The diagram below shows a simple electric circuit. Which of the following statements describes the function of the battery? A. It pushes electrons through the circuit. B. It transmits light through the circuit. C. It reduces the flow of electrons. D. It releases light during a chemical reaction.

7. Day # 2 Question 2 The diagram shows copper wire wrapped around a cardboard tube, which is then attached to a galvanometer. A galvanometer detects and measures small amounts of electric current. Which of the following would cause the galvanometer needle to move? A. wrapping additional wire around the tube B. uncoiling the wire wrapped around the tube C. moving a magnet back and forth inside the tube D. moving an aluminum block up and down inside the tube

8. Day #2 Answers 1. Which of the following statements describes the function of the battery? • It pushes electrons through the circuit. 2. Which of the following would cause the galvanometer needle to move? C. moving a magnet back and forth inside the tube

10. Day # 3 Question 1 Which of the following actions would increase the current through a circuit component? A. decreasing the power in the component B. increasing the resistance of the component C. increasing the voltage across the component D. placing another identical component in series in the circuit

11. Day # 3 Question 2 A microwave oven uses 10 A of current when connected to a wall outlet that provides 120 V of electricity. What is the resistance of the microwave oven? A. 0083. Ω B. 12 Ω C. 110 Ω D. 1200 Ω

12. Day #3 Answers 1. Which of the following actions would increase the current through a circuit component? C. increasing the voltage across the component 2. A microwave oven uses 10 A of current when connected to a wall outlet that provides 120 V of electricity. What is the resistance of the microwave oven? B. 12 Ω

14. Day # 4 Question 1 A copper sphere, a glass sphere, a plastic sphere, and a rubber sphere are placed on individual insulating stands. A student touches each sphere with an electrically charged object. The sphere made of which material will distribute the electric charge fastest over its entire surface area? A. copper B. glass C. plastic D. rubber

15. Day # 4 Question 2 In a television set with a cathode ray tube display, a beam of negatively charged particles called cathode rays passes by a positively charged plate. The beam is deflected before it hits the television screen to produce an image. Which of the following changes would result in the greatest increase in the attraction between the negatively charged particles in the beam and the positively charged plate? A. increasing the distance between the plate and the particles and increasing the charge on the plate B. increasing the distance between the plate and the particles and decreasing the charge on the plate C. decreasing the distance between the plate and the particles and increasing the charge on the plate D. decreasing the distance between the plate and the particles and decreasing the charge on the plate

16. Day #4 Answers 1. The sphere made of which material will distribute the electric charge fastest over its entire surface area? • Copper 2. Which of the following changes would result in the greatest increase in the attraction between the negatively charged particles in the beam and the positively charged plate? C. decreasing the distance between the plate and the particles and increasing the charge on the plate

18. Day # 5 Question 1 Which of the following would be an advantage of using a 42 V battery in a car instead of a 12 V battery? A. It would allow carmakers to use fewer circuits. B. It would eliminate the use of generators and alternators. C. It would produce the same amount of power using less current. D. It would produce the same amount of power using more current.

19. Day # 5 Question 2 A balloon is rubbed against a sweater. Which of the following occurs because of the rubbing? A. destruction of charged particles on the balloon B. release of charged particles from the air in the balloon C. movement of negatively charged particles from one material to the other D. movement of positively charged particles from one material to the other

20. Day #5 Answers 1. Which of the following would be an advantage of using a 24 V battery in a car instead of a 12 V battery? C. It would produce the same amount of power using less current. 2. A balloon is rubbed against a sweater. Which of the following occurs because of the rubbing? C. movement of negatively charged particles from one material to the other