The Electronics Basics?
Been working on this awhile now, could really use the help, thanks a bunch … your help is greatly appreciated.
1. Two electronics students are discussing static electricity. 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. Only Student A is correct.
B. Only Student B is correct.
C. Both of the students are correct.
D. Neither of the two students is correct.
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.
B. Only Technician B is correct.
C. Both Technician A Technician B are correct.
D. Neither of the two technicians is correct.
3. 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 components are color-coded to indicate their temperature ratings. Which of the following statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct
D. Neither of the two technicians is correct.
4. Figure A-1 shows two pith balls suspended by threads from a support. In the figure,
A. the pith balls are uncharged.
B. pith ball 1 is positively charged, and pith ball 2 is negatively charged.
C. pith balls 1 and 2 have the same charge.
D. pith ball 1 is negatively charged, and pith ball 2 is positively charged.
5. What would happen if the two pith balls shown in Figure A-1 were held together for a few moments, then released?
A. The charge would leak off and the pith balls would hang straight down.
B. The pith balls would each receive a negative charge and they would move apart.
C. The charge would cause the pith balls to stick together.
D. The pith balls would each receive a positive charge and they would move apart.
FIGURE A-1—Use this illustration to answer Questions 4 and 5.
6. Two electronics technicians are looking at the piece of testing equipment shown in Figure A-2. 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 A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither of the two technicians is correct.
FIGURE A-2—Use this illustration to answer Question 6.
7. 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. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither of the two technicians is correct.
8. Look at the resistor illustrated in Figure A-3. Based on your knowledge of the resistor color code, what are the resistance value and tolerance of this resistor?
A. 7.9 kW 10%
B. 63 kW 5%
C. 92 kW 20%
D. 124 kW 5%
FIGURE A-3—Use this illustration to answer Question 8.
9. Two electronics technicians are looking at the representations of a silver atom and a copper atom in Figure A-4. 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.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither of the two technicians is correct.
FIGURE A-4—Use this illustration to answer Question 9.
10. Two electronics technicians are discussing conductors and insulators. Technician A says that conductors have more free electrons than insulators. Technici
Tagged with: amperes • conductor • electrical values • electricity student • electronic components • electronic equipment • electronics technicians • electrons • pith ball • pith balls • resistance value • resistor • static electricity • temperature ratings • thanks a bunch • threads
Filed under: Free Electronic Circuits
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diagrams, where?
1 B
that a basic property of static electricity is Charge
2B
Read book
3 A
Confirm with your book
Some components have thermal rate or quality code
4
can not see Figure A-1. From Question 5 I Think they apart.
yet from any image. I doubt that i could determine B or D
So the two pith balls threads are strait OR apart
If strait then uncharged.A
If Apart then pith balls 1 and 2 have the same charge C
5 A
6
look for your self
7
Look up Power equation =….
and V=IR
8
look up color code
b b r..y g b v g w
1 2 3 4 5 6 7 8 9
9
I don't know
10
?
Your diagrams aren’t showing up, but I can answer some of the questions.
1. B
2. D. The resistor is 2,200,000 ohms. No resistor that you can hold in your hand can carry 2 million amps.
3. Technician A is correct. I don’t know of any color code that indicates temperature ratings: maybe temperature coefficient on capacitors, but very few capacitors are color coded now.
4. A or C
5. A
6. ?
7. D. Voltage is electrical pressure, current is rate of electrical flow, resistance is opposition to current flow.
8. I can’t see it, but there are no standard resistors with any of those values. Actual values close to those would be 8.2K, 62K, 100K, and 120K.
9. Not sure about the atom structure. Silver and copper are good conductors, and silver is slightly better (and MUCH more expensive).