Test your basic knowledge |

Basic Of Electricity 3

Subject : engineering
Instructions:
  • Answer 42 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. The flow of electricity along a conductor is called a(n)






2. The unit that measures the pressure or force that pushes the flow of electrons through a conductor is a (n)






3. Electric wires are usually covered with a rubber substance that is used as an insulator or:






4. Indicates the negative or positive pole of an electric current






5. To avoid damage to the eyes of a client or practitioner when using light therapy treatments - the eyes should be protected with saturated cotton pads or:






6. The path of electricity from the generating source through conductors and back to the original source is called a(n)






7. A thermal or heat- producing current with a high rate of oscillation that is used for scalp and facial treatments is :






8. Forces acidic substances into deeper tissue using galvanic current from the positive toward the negative pole






9. Tesla high frequency current should not be used on clients who pregnant - suffer from epilepsy or asthma - high blood pressure - sinus blockage - pacemaker or metal implants






10. Makes up 5% of natural sunlight






11. Amp






12. The process of forcing water- soluble products into the skin with the use of electric current is called :






13. A rapid and interrupted current that flows in one direction then in the opposite direction is :






14. The unit that measures the amount of electric current is a(n)






15. The negative electrode of an electrotherapy device is called a (n)






16. Is process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.






17. A process that forces liquids into the tissuse from the negative toward the positive pole is called:






18. Metals used in electric wiring and motors are materials that are considered good electricity:






19. The long wavelenghts that penetrate the deepest and produce the most heat are:






20. The current that is used for facial and scalp treatments is measured in :






21. Electricity is described as a form of:






22. Tesla high- frequency current It is commonly called






23. Uv rays are applied with a lamp at a distance of






24. Ultraviolet (UV) rays are also referred to as






25. Electric current that is constant - even - flowing and travels in one direction is:






26. The most commonly used modality that is a constant and direct current is:






27. The unit that measures how much electric energy is being used in one second is a (n)






28. Produces moist - uniform heat that can be appiled to the head or face






29. Is a measurement of how much electric energy is being used in one second






30. Meaning Alternating Current






31. A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a (n)






32. Galvanic current






33. The positive electrode of an electrotherapy device is called a (n):






34. Prevents current from overload or excessive overload of circuit






35. An important way of promoting electrical safety is the principle of:






36. Is a unit that measures the resistance of an electric current






37. Visible light - the part of the electromagnetic radiation spectrum that we can see - makes up what percentage of natural sunlight ?






38. An applicator that is used for directing the electric current from the machine to the clients skin is called a (n)






39. The device that changes direct current to alternating current is a(n)






40. The distance between two successive peaks is called the






41. Is a thermal or heat - producing current with a high rate of oscillation or vibration






42. The device that prevents excessive current from passing through a circuit is a (n)