sec-141 number 4

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ONH1111

Engineering

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electronic fundamentals

i just need to solve: 10,13,16,22,25.

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resistance? 10. The total resistance in Figure 4-68 is 20 KN. What is the value of Rg? FIGURE 4-68 RI R2 WW 4.7 kΩ 1.0 ΚΩ R; Ž 2.2 kΩ Rg RA 0W W 3.9 k 2 11. Determine the resistance between each of the following sets of pins on the PC board in Figure 4-65. (a) pin 1 and pin 8 (b) pin 2 and pin 3 (c) pin 4 and pin 7 (d) pin 5 and pin 6 12. If all the resistors in Figure 4-65 are connected in series, what is the total resistance? SECTION 4-3 Current in a Series Circuit 13. What is the current through each of four resistors in a series circuit if the source voltage is 12 V and the total resistance is 120 12? 14. The current from the source in Figure 4-69 is 5 mA. How much current does each milliamme- ter in the circuit indicate? FIGURE 4-69 + R1 mA mA + + R2 w Vs = - mA + w R3 SECTION 4-4 Application of Ohm's Law 15. What is the current in each circuit of Figure 470? Show how to connect an ammeter in each case. R 2.2 kΩ 1.0 M.2 RI + + R2 5.5 = R2 5.6 ΚΩ 16V = w 2.2 ΜΩ R3 1.0 k 2 560 k2 R2 (a) (b) 16. Determine the voltage across each resistor in Figure 4_70. SECTION 4-6 Kirchhoff's Voltage Law 21. The following voltage drops are measured across each of three resistors in series: 5.5 V, 8.2 V, and 12.3 V. What is the value of the source voltage to which these resistors are connected? 22. Five resistors are in series with a 20 V source. The voltage drops across four of the resistors are 1.5 V, 5.5 V, 3 V, and 6 V. How much voltage is across the fifth resistor? 23. Determine the unspecified voltage drop(s) in each circuit of Figure 4–71. Show how to connect a voltmeter to measure each unknown voltage drop. 2V V2 3.2 V + W w 8V M R w R + 15 V v Holi 1V Vs = 특 w 2R 0.5 V + 1.5 V 4R 3R w (a) (b) SECTION 4-7 Voltage Dividers 24. The total resistance of a series circuit is 500 12. What percentage of the total voltage appears across a 22 12 resistor in the series circuit? 25. Find the voltage between A and B in each voltage divider of Figure 4–72. FIGURE 4-72 1.0 kΩ 100 Ω + + OA 12 v = -OA 8v Hole 2.2 kΩ 47 22 ww 3.3 k 12 OB OB 101 = (a) (b)
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Anonymous
Excellent resource! Really helped me get the gist of things.

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