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






2. What can permanently break down a capacitor?






3. What is voltage?






4. What is resistance?






5. What does a moving charge produce?






6. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?






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






8. What is an electromagnet?






9. What is the fundamental property of insulators?






10. Which material has the lowest resistance at ordinary temperatures?






11. What is a rigid metal conduit?






12. What does a first band of white mean?






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






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






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






16. What type of circuit has one path of follow through a load?






17. What is dielectric strength?






18. What is the basic law of magnetic force?






19. What is a type of mechanical transducer?






20. What cannot be transformed to higher or lower potential differences?






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






22. What is the term for two or more cells attached together?






23. In most applications - what remains constant if the current remains constant and flows in one direction?






24. What is a characteristic of insulators?






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






26. What does Ohm's Law represent?






27. What is the purpose of resistors in electrical circuits?






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






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






30. What does a transformer transform?






31. What is another name for an inductor?






32. How do static charges distribute themselves?






33. When reading resistance color codes - what does the first band indicate?






34. What is a way to classify wires and cables?






35. What is a type of capacitor?






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






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






38. Which type of cell can be recharged?






39. Which way is the current going in the circuit shown?(electron flow)






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






41. What makes electrons flow?






42. What is the unit of measurement of resistance?






43. What is needed for electric heating elements and the filaments of light bulbs?






44. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?






45. What does a third band of brown mean?






46. What is induction?






47. What is 'difference in potential(potential difference) - per unit of charge - between two points'?






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






49. What is power?






50. What is the relationship of conductor size and length to resistance?