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 insulation resistance?






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






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






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






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






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






7. 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






8. How do you read resistor color codes?






9. What does resistance produce?






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






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






12. What is a property of inductors in electrical circuits?






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






14. What makes electrons flow?






15. What is the basic law of magnetic force?






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






17. How many kinds of poles do magnets have?






18. What is a conductor?






19. What is induction?






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






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






22. What is dielectric strength?






23. What is the relationship between cells and batteries?






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






25. Identify the blueprint symbol for capacitors.






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






27. What are the names of two of the six primary methods of producing a voltage?






28. What is another name for an inductor?






29. What determines whether a spark can be produced?






30. What does a moving charge produce?






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






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






33. What is a common measure of wire diameter?






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






35. What is a type of capacitor?






36. What does Ohm's Law represent?






37. What can permanently break down a capacitor?






38. What must be large enough to carry the largest current likely to occur?






39. What are the common units of measurement for round and square conductor cross - sections?






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






41. What is the relationship between magnetism and electricity?






42. What is a DC circuit characteristic?






43. What is a common form used in conductors?






44. What does a first band of white mean?






45. What do junction boxes protect?






46. What is the term for doing work at the rate of joule per second?






47. What does a third band of brown mean?






48. What is the fundamental property of insulators?






49. What is a wire classification?






50. What is the use of the electromagnet?