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Electricity Fundamentals & Overview Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Which of the following statements is true about electric potential?

Question 2 2. In J. J. Thomson's 3rd experiment he decided that the particles making up the cathode rays must be smaller than an atom. This ended up being correct, but what was the other possibility?

Question 3 3. When electricity flows inside a magnetic field (like what happens with the loop of wire in an electric motor), the wire feels a force. In what general direction is that force?

Question 4 4. Two charged objects exert forces on each other. The sizes of both forces will increase if which of these happens?

Question 5 5. You are walking on a rug and gain a positive charge. When you touch a neutral doorknob:

Page 2

Question 6 6. Which statement is true of electricity?

Question 7 7. Someone at the FCC was not paying attention and allowed two radio stations to transmit on the same frequency. One station plays Classic Rock, and the other plays Smooth Jazz. Someone who is nearby to both towers would hear what on their radio?

Question 8 8. Which of the following electrochemical cells are used exclusively with electrolysis?

Question 9 9. Which of the following circuits shows an ammeter set up correctly to measure the current passing through resistor 3 (R3)?

Question 10 10. Which of the following is not a defining property of a parallel circuit?

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Question 11 11. A circuit contains a voltage source of 3V and an unknown resistance. The current is known to be 300 mA. What is the resistance (in ohms)?

Question 12 12. A copper voltameter uses a square cathode plate measuring 7 inches on each side. The current density is kept at 10 amperes per foot. What current is required to deposit copper fully on both sides of the cathode at the specified current density?

Question 13 13. An oxygen atom has 8 protons in its nucleus and 8 electrons. What is its net charge? (Note in the responses that e = 1.602x10^-19 Coulombs.)

Question 14 14. In Coulomb's law, the electrostatic force (F) between charges is equal to what?

Question 15 15. What is the power consumed by an AC spotlight that is driven by a voltage that has a 300V peak value and has an internal resistance of 10 ohms?

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Question 16 16. When you rub your hair with a plastic comb, why does your hair stand up?

Question 17 17. If several resistors are connected in series, how does this affect the current in the circuit?

Question 18 18. What does the term, 'charge density', refer to?

Question 19 19. When J. J. Thomson first discovered the electron, he did not call it that. What did he call it?

Question 20 20. Which of the following statements describes how an electric motor works?

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Question 21 21. Select the correct image of the electric field between two unlike charges.

Question 22 22. Which of the following will likely be positive if rubbed with fur?

Question 23 23. This is the unit of measure for electrical power:

Question 24 24. Mulder and Scully are in a dark room, Scully turns on her flashlight to reveal the faint outline of an alien artifact. Mulder turns on his flashlight as well, when he shines it at the same object as Scully, the light level appears _____.

Question 25 25. Conducting an electrolysis reaction is associated with which one of the following purposes?

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Question 26 26. What happens when an ammeter is set up in a parallel connection with the part of the circuit where you want to measure current?

Question 27 27. A cabin cruiser uses a rechargeable 24V marine battery to run the electrical circuits. During average usage of the cabin lights and other systems, a charged battery delivers 6.3A of current. If three identical 24V batteries are connected in parallel to run the lights and other cabin systems, what will be the average current per battery during average usage?

Question 28 28. What well-known expression does this picture represent?

Question 29 29. What is the apparatus used to measure electric charge and standardize the ampere unit?

Question 30 30. What are the two types of electric charge?

Electricity Fundamentals & Overview Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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