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Basic Electricity

Subject : engineering
  • Answer 50 questions in 15 minutes.
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  • 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 makes electrons flow?

2. What is dielectric strength?

3. What is the purpose of capacitors in electrical circuits?

4. What is another name for an inductor?

5. What is the unit of measurement of resistance?

6. What do transducers do in electrical terms?

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

8. What is the measure of potential difference?

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

10. How do you read resistor color codes?

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

12. What determines whether a spark can be produced?

13. What is the fundamental property of insulators?

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

15. What is the purpose of a raceway?

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

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

18. What is resistance in electrical terms?

19. Why is the transformer important to AC electricity?

20. What is a type of capacitor?

21. What is power?

22. What type of circuit has two or more paths for current to follow?

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

24. What does a third band of brown mean?

25. To what measurement do the conductor mills refer?

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

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

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

29. How is capacitance determined?

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

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

32. What do junction boxes protect?

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

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

35. What is voltage?

36. What is true about a dry cell?

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

38. 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

39. What does resistance produce?

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

41. What is the relationship between magnetism and electricity?

42. What is a rigid metal conduit?

43. What is a conductor?

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

45. What instrument measures voltage?

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

47. What types of protective tapes are used?

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

49. Identify the blueprint symbol for capacitors.

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