July 2012
Beginner
576 pages
9h 46m
English
Content preview from Complete Electronics Self-Teaching Guide with Projects
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DC Pre-Test
The following problems and questions test your understanding of the basic principles presented in this chapter. You need a separate sheet of paper for your calculations. Compare your answers with the answers provided following the test. You can work many of the problems in more than one way.
Questions 1–5 use the circuit shown in Figure 1.20. Find the unknown values indicated using the values given.
1. R1 = 12 ohms, R2 = 36 ohms, VS = 24 volts
RT = _____ , I = _____
2. R1 = 1 kΩ, R2 = 3 kΩ, I = 5 mA
V1 = _____ , V2 = _____ , VS = _____
3. R1 = 12 kΩ, R2 = 8 kΩ, VS = 24 volts
V1 = _____ , V2 = _____
4. VS = 36 V, I = 250 mA, V1 = 6 volts
R2 = _____
5. Now, go back to problem 1. Find the power dissipated by each resistor and the total power delivered by the source.
P1 = _____ , P2 = _____ , PT = _____
Questions 6–8 use the circuit shown in Figure 1.21. Again, find the unknowns using the given values.
6. R1 = 6 kΩ, R2 = 12 kΩ, VS = 20 volts
RT = _____ , I = _____
7. I = 2 A, R1 = 10 ohms, R2 = 30 ohms
I1 = _____ , I2 = _____
8. VS = 12 volts, I = 300 mA, R1 = 50 ohms
R2 = _____ , P1 = _____
9. What is the maximum current that a 220- ohm resistor can safely have if its power rating is 1/4 watt?
IMAX = _____
10. In a series RC circuit ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.