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 k 10%
B. 63 k 5%

C. 92 k 20%

D. 124 k 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. Technician B says that
my answers are; 1b,2d,3a,4c,5a,6d,7d,8b,9b,10a,11b,12d,13d,14a,15a,16b,17d,18a,19b,20d. thanks for checking!!!

1. When electric current is flowing in a circuit, if the voltage applied to the circuit is increased,

A. the resistance will increase.
B. the current will increase.

C. the resistance will decrease.

D. the current will decrease.

2. Which of the following information sources will not be directly affected by the Telecommunications Act of 1996?

A. Telephone services
B. The Internet

C. Newspaper publishing

D. Cable television

3. Porcelain, paper, glass, and rubber are all examples of electrical

A. conductors.
B. batteries.

C. insulators.

D. grounds.

4. A testing instrument that an electronics technician will connect to selected points inside a piece of electronic equipment and measure electrical values such as ohms, volts, and amperes is called

A. a signal generator.
B. a power supply.

C. an oscilloscope.

D. a multimeter.

FIGURE A-1—Use this illustration to answer Question 5.

5. Look at the four schematic symbols shown in Figure A-1. Each of the symbols is labeled with a number. Which of the following statements about these symbols is correct?

A. Symbol 1 represents a diode, symbol 2 represents a resistor, symbol 3 represents an LED, and symbol 4 represents a transistor.
B. Symbol 1 represents a diode, symbol 2 represents an LED, symbol 3 represents a transistor, and symbol 4 represents a resistor.

C. Symbol 1 represents a transistor, symbol 2 represents a resistor, symbol 3 represents an LED, and symbol 4 represents a diode.

D. Symbol 1 represents a transistor, symbol 2 represents a diode, symbol 3 represents a resistor, and symbol 4 represents an LED.

6. Which of the following is a correct definition of the term rectification?

A. Rectification is the opposition to current flow in a circuit.
B. Rectification involves sensing an electrical quantity and converting it to a signal.

C. Rectification is the conversion of AC current to DC current.

D. Rectification refers to the connection of components into a circuit.

FIGURE A-2—Use this illustration to answer
Questions 7–10.

7. Look at the simple circuit illustrated in Figure A-2. What will happen when only switch S1 is closed?

A. The light bulb will light up.
B. Current will flow in the circuit.

C. The resistance of the circuit will increase.

D. Nothing will happen—the light bulb won't light up.

8. In the circuit shown in Figure A-2, what will happen when switches S1 and S3 are both closed?

A. The light bulb will light up.
B. Current will flow in the circuit.

C. The resistance of the circuit will increase.

D. Nothing will happen—the light bulb won't light up.

9. In the circuit shown in Figure A-2, what will happen when switches S2 and S3 are both closed?

A. The light bulb will light up.
B. Current will flow in the circuit.

C. The resistance of the circuit will increase.

D. Nothing will happen—the light bulb won't light up.

10. In the circuit shown in Figure A-2, which switches must be closed in order for the light bulb to light up?

A. Only switch S1 needs to be closed in order for the light bulb to light up.
B. Only switches S1 and S2 need to be closed in order for the light bulb to light up.

C. Only switches S1 and S3 need to be closed in order for the light bulb to light up.

D. Only switches S2 and S3 need to be closed in order for the light bulb to light up.

11. At a job interview, the most effective way to prove your proficiency to a prospective employer is to show that you have

A. membership in several professional organizations.
B. certification as an electronics technician.

C. experience with on-line research.

D. your own test equipment.

12. Which one of the following letters is used as an abbreviation when representing a unit of electric current?

A. E
B. R

C. C

D. A

FIGURE A-3—Use this illustration to answer Question 13.

13. Safety is a concern around electronic equipment of all types. When you see the sign and the symbol shown in Figure A-3, what particular safety hazard may exist?

A. High voltage
B. Laser light

C. Delicate equipment

D. Radioactivity

14. Which of the following statements about light-emitting diodes is correct?

A. Light-emitting diodes conduct current in either direction in circuits.
B. Light-emitting diodes are used as indicators in circuits.

C. Light-emitting diodes have very short life-spans in circuits.

D. Light-emitting diodes are used

i'm solving electronic homework ,and i got the values R1=66.67
R2=12.4k
(and Rs=10 ,RL=1k are given),there is part in the question which want me to chose the closet values for the resistor before i design the circuit in pspice program.
can u tell me how i can chose from the given appendix below

Preferred resistance values (approximately 10% increase)

I1.01.52.23.34.76.8
II1.11.62.43.65.17.5
III1.21.82.73.95.68.2
IV1.32.03.04.36.29.1

I to IV for (+-)5% tolerance resistors
I and III for (+-)10% tolerance resistors
I for (+-)20% tolerance resistors

Values multiplied by 1, 10, 100, 1k, 10k, 100k, 1M, 10M
Multiplier 10 to 100k can cover all the preferred values
E.g. 11, 110, 1.1k, 11k, 110k

Resistor types: Carbon film, metal film, wirewound
i think this will be clear

I(1.0)(1.5)(2.2)(3.3)(4.7)6.8)
II(1.1)(1.6)(2.4)(3.6)(5.1)(7.5)
III(1.2)(1.8)(2.7(3.9)(5.6)(8.2)
IV(1.3)(2.0)(3.0)(4.3)(6.2)(9.1)

2004 toyota 4runner
fan won't blow, electronic temprature control says it's on, I can hear the flaps move as I change the function. Also the rear glass defrost does not appear to work, even though the light is on, if it's on the same circuit…
there's 2 fuses in box under the hood maked heat, a 15 amp and a 60 amp, both look good, and 2 relays marked heat.
I didn't seem to see relavant fuses in the dashboard fuse block.
Any diagrams where to start?
in the olden days I knew how to check the little resistor coils, but this electronic control has more going on, and it's too cold to just be exploring without a plan.

Thanks,
Jeff
Green Bay Wisconsin
9 below zero today

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

Getting a little confused.

Have these definitions and not sure which is which:

1.Stores an electrical charge and releases it temporarily for control purposes.

2.Will only allow current to flow in one direction and emits light

3.This is a means of isolating/breaking the power supply.

4.Limits the flow of current in a circuit.

5. Stores electrical energy.

6.A fast latching electronic switch

7.Is an output device

Resistor, LED, Capacitor, Buzzer, Thyristor, Push to make switch, Battery.

Which relates to which definition please!
Thanks.
There are two differences of opinions for thyristor and switch. Which is the correct one?

I’m trying to make an LED nightlite in a small size I have basic electronic understanding but am looking for some insight and possibly formulas describing how to make my circuit the LEDs I want to use need 4V and have a 350MA draw I plan on using 6 of these LEDs. presumably I need some sort of device (diode?) that would convert the current from AC to DC and then a resistor/s right?
So if I Use 2 LEDs back to back I would have to have them in parallel wouldn't I with one reversed from the other? or else the circuit would remain closed wouldn't it? An LED/Diode acts as a one way valve from what I understand, so with 2 LEDs in series if the ac switches direction they would either both be closed or both be open wouldn't they?

An electronic flash attachment for a camera produces a flash by using the energy stored in a 720 µF capacitor. Between flashes, the capacitor recharges through a resistor whose resistance is chosen so the capacitor recharges with a time constant of 3.0 s. Determine the value of the resistance.

I’m pretty new to electronics, but i know a but about it. I recently opened up my door bell transmitter (the thing that is outside that u press to make ur door bell ring). its wireless. inside i found the average array of ceramic capacitors and resistors. but there are 3 things i have trouble figuring out. There is somethin that is labeled as d1 (kinda like how resistor is labeled r1,r2,r2 and capacitor is c1,c2, etc.) im guessin this is a diode? not sure. it just makes sense to me. then, there is a blue round thing that kinda resembles an aluminum capacitor but its not. its located near a long metal bar. my guess is that this is the transmitter? and the bar is an antenna? no idea. and final thing is in the center of the circuit board. its like a black drop of some sort of material. its not like an electronic component. it looks like a drop of black glue thats hard and solid. on the underside u can see a bunch of circuits ending under it. my guess is that it connects them all, but that doesnt seem right. i honestly cant figure out wat it could be. sigh… well plz let me know wat all this stuff is. i really wanna build a similar contraption. thnx a lot guys

electronic circuit board with ICs

A.exploded
B.flowchart
C.assembly
D.pictorial

a resistor with a color brands brown, red, red and silver will have a resistance of?

A.120 ohms
B. 1,200 ohms
C. 2,100 ohms
D. 6,400 ohms