Test your basic knowledge |

Basic Electricity

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What is the relationship between cells and batteries?






2. The dry cell is what method for creating potential energy?






3. How is capacitance determined?






4. What does resistance produce?






5. What is true about a dry cell?






6. What is the use of the electromagnet?






7. What is the unit of measurement of electrical current?






8. If the fourth color band is missing - this means the measured value of the resistance is what percent of the marked value?






9. What is a conductor?






10. When reading resistance color codes - what does the fourth band indicate?






11. If the fourth color band is silver - this means the measured value of the resistance is what percent of the marked value?






12. Which of the following materials is NOT a good conductor?






13. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?






14. What is the fundamental property of insulators?






15. What do junction boxes protect?






16. What makes electrons flow?






17. What is a type of capacitor?






18. Given R=E / I and the following information - plug in the data and solve the problem for resistance. 1.5 volt walkman battery - 0.02 amps of current






19. Why is the transformer important to AC electricity?

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20. What is the unit of measurement of resistance?






21. What is a characteristic of insulators?






22. What is capacitance in electrical terms?






23. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.






24. Where do the fingers point in both Left-Hand Rules?






25. What can permanently break down a capacitor?






26. What is resistance?






27. What is an arrangement of materials that create a potential difference by chemistry?






28. What do transducers do in electrical terms?






29. Where does the thumb point in both Left-Hand Rules?






30. What is the unit of measurement of potential difference?






31. What wire measurement is commonly used in the U.S.?






32. What results when current is run through a material with high resistance?






33. To what measurement do the conductor mills refer?






34. What information do the Left-Hand Rules provide?






35. When does a DC circuit oppose current flow?






36. What is resistance in electrical terms?






37. A resistor is color coded brown - green - orange. What is its resistance?






38. If the fourth color band is gold - this means the measured value of the resistance is what percent of the marked value?






39. What is an electromagnet?






40. How many kinds of poles do magnets have?






41. Identify the blueprint symbol for resistors.






42. What is dielectric strength?






43. What is the type of cable composed of many fine wires?






44. What do we call the ability to do work?






45. What is the relationship between magnetism and electricity?






46. What are the two generic methods to eliminate static electricity from metal objects?






47. What is voltage?






48. What do electrical charges need to cause a fire or explosion?






49. What is the name for electrical resistance of insulation?






50. The thermocouple uses which method for creating potential energy?