3. The figure above shows two pith balls suspended by threads from a support. In the figure,

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1 3. The figure above shows two pith balls suspended by threads from a support. In the figure, Student ID: Exam: RR - Electronics Basics When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam. Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer. 1. Look at the resistor illustrated in the figure above. Based on your knowledge of the resistor color code, what are the resistance value and tolerance of this resistor? A. 126 k 10% B. 3.8 k 20% C. 270 k 5% D. 42 k 5% 2. Two electronics technicians are looking at the technical manual for a piece of electronic equipment. The manual refers to a particular resistor as a "2.2 megohm resistor." Technician A says that this means that the resistance value of the resistor is 22,000 ohms. Technician B says that this means that the resistor can safely carry a current of 2,200,000 amperes. Which of the following statements is correct? A. Only Technician A is correct. C. Neither of the two technicians is correct. D. Both Technician A Technician B are correct.

2 A. pith ball 1 is positively charged, and pith ball 2 is negatively charged. B. pith ball 1 is negatively charged, and pith ball 2 is positively charged. C. the pith balls are uncharged. D. pith balls 1 and 2 have the same charge. 4. Look at the four schematic symbols shown in the figure above. Each of the symbols is labeled with a number. Which of the following statements about these symbols is correct? A. Symbol 1 represents a wire connection, symbol 2 represents a battery, symbol 3 represents a variable resistor, and symbol 4 represents a fuse. B. Symbol 1 represents a fuse, symbol 2 represents a fixed resistor, symbol 3 represents a battery, and symbol 4 represents an SPST switch. C. Symbol 1 represents a fixed resistor, symbol 2 represents a fuse, symbol 3 represents a relay coil, and symbol 4 represents a lightbulb. D. Symbol 1 represents a battery, symbol 2 represents a lightbulb, symbol 3 represents a fuse, and symbol 4 represents a relay coil. 5. Look at the resistor illustrated in the figure above. Based on your knowledge of the resistor color code, what are the resistance value and tolerance of this resistor? A. 525 k 20% B. 30 k 10% C. 1.5 k 10% D. 2.7 k 5% 6. Two electronics technicians are discussing electrical quantities. Technician A says that resistance is an opposition to electrical power and voltage is electrical pressure. Technician B says that current is the rate of electrical flow in a circuit and voltage is the opposition to current flow. Which of the following statements is correct? A. Both Technician A and Technician B are correct. B. Neither of the two technicians is correct. C. Only Technician B is correct. D. Only Technician A is correct.

3 10. Two electronics students are discussing electrical units. Student A says that electrical power is measured in units called coulombs. Student B says that the abbreviation 400 k stands for 400,000 volts. 7. You observe a small plaque on an electrical appliance that reads, in part, "115 volts AC 60 Hz." This means that the appliance A. may be operated with batteries. B. produces special safety hazards. C. must be operated on alternating current. D. contains a heating element. 8. Two electronics technicians are looking at the testing instrument in the figure above. Technician A says that this instrument is used to measure electrical signals in a circuit and display them as waveforms on a screen. Technician B says that this instrument is called a signal generator. Which of the following statements is correct? A. Both Technician B is correct. B. Only Technician A is correct. C. Neither of the two technicians is correct. 9. Two electronics students are discussing static electricity and electric current. Student A says that a basic property of static electricity is the fact that it can't be detected. Student B says that an electric current results when electrons move in a conductor. Which of the following statements is correct? A. Both of the students are correct. B. Only Student A is correct. C. Only Student B is correct. D. Neither of the two students is correct.

4 Which of the following statements is correct? A. Only Student A is correct. B. Both of the students are correct. C. Only Student B is correct. D. Neither of the two students is correct. 11. Look at the resistor illustrated in the figure above. Based on your knowledge of the resistor color code, what are the resistance value and tolerance of this resistor? A. 63 k 5% B. 124 k 5% C. 92 k 20% D. 7.9 k 10% 12. Two electronics technicians are discussing conductors and insulators. Technician A says that conductors have more free electrons than insulators. Technician B says that insulators have lower resistance than conductors. Which of the following statements is correct? A. Both Technician A and Technician B are correct. C. Only Technician A is correct. D. Neither of the two technicians is correct. 13. Two electronics technicians are discussing the electric series. Technician A says that if you rub a piece of glass with a piece of wool cloth, the glass will receive a negative charge. Technician B says that if you rub a piece of aluminum with a piece of flannel, the aluminum will receive a negative charge. Which of the following statements is correct? A. Neither of the two technicians is correct. B. Only Technician A is correct. C. Only Technician B is correct.

5 14. Two electronics technicians are looking at the representations of a silver atom and a copper atom in the figure above. Technician A says that silver and copper are both good conductors because their atoms have single electrons in their outermost orbits. Technician B says that silver is a better conductor than copper because the silver atom's free electron is farther from its nucleus than the copper atom's free electron is from its nucleus. Which of the following statements is correct? A. Only Technician A is correct. C. Neither of the two technicians is correct. 15. Two electronics students are converting values into scientific notation. Student A says that the number 29,000 is expressed as in scientific notation. Student B says that the number is expressed as in scientific notation. Which of the following statements is correct? A. Both of the students are correct. B. Neither of the two students is correct. C. Only Student A is correct. D. Only Student B is correct. 16. The figure above shows two pith balls suspended by threads from a support. In the figure, A. the pith balls both have the a positive charge, so they hang straight down.

6 B. pith ball 1 is negatively charged, and pith ball 2 is positively charged. C. pith ball 1 is positively charged, and pith ball 2 is negatively charged. D. the pith balls are uncharged, so they hang straight down. 17. Two electronics technicians are looking at the piece of testing equipment shown in the figure above. Technician A says that this piece of equipment is called a digital multimeter. Technician B says that this piece of equipment is substituted for the power conversion circuits inside a piece of equipment that's being tested. Which of the following statements is correct? A. Only Technician B is correct. B. Both Technician A and Technician B are correct. C. Only Technician A is correct. D. Neither of the two technicians is correct. 18. What would happen if the two pith balls shown in the figure above were held together for a few moments, then released? A. The pith balls would each receive a positive charge and they would move apart. B. The charge would cause the pith balls to stick together. C. The charge would leak off and the pith balls would hang straight down. D. The pith balls would each receive a negative charge and they would move apart. 19. Two electronics technicians are discussing electronic components. Technician A says that electronic components are color-coded to indicate their electrical values. Technician B says that electronic

7 components are color-coded to indicate their power ratings. Which of the following statements is correct? A. Neither of the two technicians is correct. C. Only Technician A is correct. 20. Two electronics technicians are measuring electrical quantities in circuits. Technician A says that copper, glass, porcelain, and carbon are all examples of resistors. Technician B says that when the resistance in a circuit is increased, the current flow will decrease. Which of the following statements is correct? A. Neither of the two technicians is correct. B. Only Technician A is correct. C. Both Technician A and Technician B are correct. D. Only Technician B is correct. End of exam