Physics 2 quiz

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Easy physics project. Has to be done well. All of the topics that will be covered on the test will be listed below. If you have any questions please comment below.

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Name _________________________________ I.D. Number _______________________ Unit 4 Evaluation Physics 2 (SCIH 036 058) This evaluation will cover the lessons in this unit. It is open book, meaning you can use your textbook, syllabus, and other course materials. To submit the evaluation, follow the directions provided. When you feel you are adequately prepared, complete this Unit Evaluation. It is important that you do your own work. If you have difficulty with particular sections, you may use your textbook and course materials for help in answering the questions. You may also use your calculator on this evaluation. After you have completed this evaluation, you will submit it for grading. Multiple Choice Choose the answer that best completes the statement or answers the question. ____ 1. The fundamental principle underlying all of electricity is that a. two charges always attract. b. two charges always repel. c. like charges repel while unlike charges attract. d. like charges attract while unlike charges repel. ____ 2. By convention, the charges of electrons, protons, and neutrons are a. -1, +1, neutral. b. +1, -1, neutral. c. +1, -1, -1. d. -1, -1, +1. ____ 3. Compared to gravity, the electromagnetic force is a. about the same strength. b. much stronger. c. much weaker. Unit 4 Evaluation SCIH 036 ____ 4. Why don’t you feel the electric force on you all the time? a. You are not close enough to any charges. b. You don’t have any charged particles in your body. c. The positive and negative charges in your body are essentially equal. d. You do feel the electric force all the time but you are used to it. ____ 5. Compared to the magnitude of the charge on a proton, a. the charge on an electron is much smaller. b. the charge on an electron is the same. c. the charge on an electron is much larger. d. it depends on the size of the atom. ____ 6. Charged particles are usually formed by adding or removing a. electrons in the electron cloud. b. protons from the nucleus. c. electrons from the nucleus. d. protons from the proton cloud. ____ 7. How many electrons are contained in 1C of charge? a. 1 b. way more than 1 c. way less than 1 Unit 4 Evaluation SCIH 036 Use the following illustration to answer questions 8-12. ____ 8. This is an example of charging by a. induction. b. friction. c. contact. d. transfer of electrons. ____ 9. In which step (a, b, c, or d) do you see “electrons in one sphere are repelled by electrons in a nearby substance”? a. step a b. step b c. step c d. step d ____ 10. In which step (a, b, c, or d) do you see “the spheres are in contact so they form a single non-charged conductor”? a. step a b. step b c. step c d. step d Unit 4 Evaluation SCIH 036 ____ 11. In which step (a, b, c, or d) do you see that “the spheres are charged equally and oppositely and will maintain this charge”? a. step a b. step b c. step c d. step d ____ 12. The charged rod used to charge the spheres maintains its negative charge even after the two spheres have been charged. a. True b. False ____ 13. A lightning rod placed above a building repels electrons in the air to prevent leaking of charge onto the ground. a. True b. False ____ 14. Why does a charged comb attract an uncharged piece of paper? a. The comb induced polarization in the paper and the forces of attraction and repulsion on opposite sides of the paper cancel. b. The comb induces polarization in the paper and the forces of attraction and repulsion on the paper disappear with the comb nearby. c. The comb induces polarization in the paper and the force of attraction for the closer charge is greater than the force of repulsion for the farther charge. d. The comb induces polarization in the paper and the force of repulsion for the closer charge is greater than the force of attraction for the farther charge. ____ 15. Coulomb’s law says that the electric force F  k q1q2 . If the charge of each particle tripled d2 and the distance also tripled, how would the electrostatic force between the particles change? a. 3X greater b. 3X less c. 9X greater d. no change Unit 4 Evaluation SCIH 036 Use the following graphic to answer questions (16-18) ____ 16. Which shows field lines emanating from the positive charge and terminating on the negative charge? a. figure a b. figure b c. figure c ____ 17. Which shows field lines evenly spaced between two oppositely charged plates? a. figure a b. figure b c. figure c ____ 18. Which shows field lines extending to infinity? a. figure a b. figure b c. figure c ____ 19. Refer to Figure 33.8 in your textbook. Which of the following statements is NOT true about electric shielding? a. When an electric field is applied, free electrons in the conductor rearrange themselves to create an equal and opposite electric field. b. The charges arrange themselves to ensure a zero field within the material. c. If the conductor is spherical, then the charge distribution will not be uniform. Unit 4 Evaluation SCIH 036 ____ 20. Which of the following statements is NOT true about electrical potential energy? a. Work is required to push a charge particle against the electric field of a charged body. b. The electrical potential energy of a charged particle decreases when work is done to push it against the electric field of a charged body. c. If a charge with electrical potential energy is released, its electrical potential energy will transform into kinetic energy. ____ 21. What is the difference between a capacitor and a battery? a. A battery stores energy while a capacitor uses the energy to do work. b. They are two names for the same thing and they work in the same way. c. They both store energy but a battery releases it slowly while a capacitor releases it all at once. d. A capacitor stores energy while a battery is used to do work (like lighting a bulb). ____ 22. An electric field exerts a force of 2.6 x 10-4 N on a test charge of 5.5 x 10-6 C. What is the strength of the electric field at the location of the test charge? a. 4.73 N/C b. 2.6 x 10-4 N/C c. 0.021 N/C d. 47.3 N/C ____ 23. A 10 uC charge is located in a 400 N/C electric field. What is the force experienced by the charge? a. 1 x 10-3 N/C b. 1 x 10-3 N c. 4x10-3 N d. 4 x10-3 N/C ____ 24. The resistance of a wire increases as the wire gets a. longer. b. narrower. c. hotter. d. all of the above. Unit 4 Evaluation SCIH 036 ____ 25. Ohm’s Law relating current, voltage, and resistance. It is correctly expressed as a. I = V/R. b. I = VR. c. R = VI. d. R = I/V. ____ 26. When thinking about safety, try to minimize your exposure to a. voltage. b. current. c. resistance. ____ 27. A battery produces a. direct current. b. alternating current. c. direct or alternating current, depending on the type of battery. ____ 28. Typical household wiring provides a. direct current. b. alternating current. c. a combination of direct and alternating current depending on what appliance is being used. ____ 29. What is a circuit? a. a way to light a light-bulb with a battery b. a diagram showing how wires, batteries and bulbs are connected c. a complete path for electrons to flow from battery to bulb and back ____ 30. Is it incorrect to say that electric current flows out of and into a battery? a. No, that must happen for the circuit to be complete. b. Yes, electrons flow continuously around the circuit and the “current” is the result of moving electrons. c. No, batteries store current and release it as needed. d. Yes, current only flows “out of”, not “into” a battery. Unit 4 Evaluation SCIH 036 ____ 31. What does an “open switch” mean in a circuit? a. Open switches are like open doors, they allow movement through them and a bulb will light. b. Open switches are like plugged parts of a water line—they stop the flow of electrons. Matching It is often useful to think of water flowing through pipes as an analogy for electric circuits. Use the water analogy in Figure 34.5 on page 684 of your textbook to match the parts of a typical circuit to those of typical plumbing fixtures. ____ 32. pump a. wires ____ 33. valve b. switch ____ 34. line c. battery d. resistor (such as a light bulb) ____ 35. pipes Carefully check your answers on this evaluation and make any corrections you feel are necessary. When you are satisfied that you have answered the questions to the best of your ability, transfer your answers to an answer sheet. Please refer to the information sheet that came with your course materials. Unit 4 Evaluation SCIH 036
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Q1: (c)
Q2 :( a)
Q3 :( c)
Q4: (c)
Q5: (b)
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