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Electric Currents & Power 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. You are walking on a rug and gain a positive charge. When you touch a neutral doorknob:

Question 2 2. How does friction cause static electricity?

Question 3 3. Which of the following will likely be positive if rubbed with fur?

Question 4 4. Lightning does not involve:

Question 5 5. What is the difference between a battery and a fuel cell?

Page 2

Question 6 6. Which of the following is NOT an example of a device that generally contains a battery?

Question 7 7. What is a voltaic cell?

Question 8 8. What is the main energy transfer that happens inside voltaic cells?

Question 9 9. Current is equal to:

Question 10 10. Voltage is equal to:

Page 3

Question 11 11. If the resistance is increased:

Question 12 12. If the voltage is increased:

Question 13 13. Power is a measure of how much:

Question 14 14. When given the current and voltage, power can be calculated by:

Question 15 15. When given the current and resistance, power can be calculated by:

Page 4

Question 16 16. The unit of electrical power is the:

Question 17 17. Adding a light bulb to a parallel circuit will:

Question 18 18. The voltage lost in each light bulb in a series circuit:

Question 19 19. Adding a light bulb to a series circuit will:

Question 20 20. The voltage across each light bulb in a parallel circuit:

Page 5

Question 21 21. The transfer of electrical energy through a conductor:

Question 22 22. Direct current:

Question 23 23. Current is:

Question 24 24. The two types of current are:

Question 25 25. Materials that make good electrical conductors contain atoms with:

Page 6

Question 26 26. An example of a good conductor is:

Question 27 27. Materials that make good electrical insulators contain atoms with:

Question 28 28. Conductivity is:

Question 29 29. You rub a balloon on your hair. The balloon becomes negatively charged; therefore, your hair:

Question 30 30. Fill in the blanks: In a voltaic cell, the ________ is where oxidation occurs, and the _______ is where reduction occurs.

Electric Currents & Power 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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