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. 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






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






3. What does resistance produce?






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






5. What is a type of mechanical transducer?






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






7. What is a conductor?






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






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






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






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






12. How is capacitance determined?






13. What is the purpose of a raceway?






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






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






16. What do transducers do in electrical terms?






17. What does static electricity do?






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






19. What does a moving charge produce?






20. What is an electromagnet?






21. Why is the transformer important to AC electricity?

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






23. What does an object have if a magnetic field acts on it?






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






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






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






27. What is a switch that operates by electricity?






28. What is the relationship between magnetism and electricity?






29. How is the heat production measured in a resistor?






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






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






32. What makes electrons flow?






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






34. What is true about a dry cell?






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






36. How do you read resistor color codes?






37. What is capacitance in electrical terms?






38. When does a DC circuit oppose current flow?






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






40. To what measurement do the conductor mills refer?






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






42. What is power?






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






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






45. What can permanently break down a capacitor?






46. What does a transformer transform?






47. How do static charges distribute themselves?






48. What determines whether a spark can be produced?






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






50. What is the relationship between cells and batteries?