NOTE: Questions 2 through 4 refer to Fig. 4-5. 8. Refer to Fig. 4-5. Calculate the total resistance of the parallel circuit. a. 450 Q b. 500 Q c. 90 Q d. 900 Q IT 30mAdc R1 R2 27Vdc R3 10K 15K Fig. 4 - 5 9. How much current flows through resistor R3? a. 2.7 mAdc b. 1.8 mAdc C. 25.5 mAdc d. 29.55 mAdc 10. What is the resistance value of R3? a. 1059 b. 1500 2 10 k Q d. 15 k2 C.
1. Which of the following statements is true?
a. Terminal A is negative with respect to terminal D.
b. Terminal D is negative with respect to terminal A.
c. A voltmeter connected between terminals A and C would measure 40Vdc.
d. Terminal A is positive with respect to terminal D.
2. Which of the following statements is true?
a. ES = ER1 – ER2 – ER3
b. ER1 – ER2 – ER3 = 100Vdc
c. ES = ER1 + ER2 + 30 Vdc
d. ER1 + ER2 + ER3 = ES
3. What is the value of resistor R1?
a. 5000 Ω
b. 1500 Ω
c. 3000 Ω
d. 10 000 Ω
4. What is the voltage drop between points A and B?
a. 45 Vdc
b. 15 Vdc
c. 10 Vdc
d. 60 Vdc
5. What is the voltage drop between points B and C?
a. 5 Vdc
b. 15 Vdc
c. 10 Vdc
d. 7.5 Vdc
6. What is the value of resistor R2?
a. 500 Ω
b. 1000 Ω
c. 1500 Ω
d. 3000 Ω
7. Refer to TLO 4, Fig. 4-3 and Exercise Procedure 4. What is the approximated
resistance of DS1 when lighted?
a. 35 Ω
b. 75 Ω
c. 42 Ω
d. 100 Ω
5. What is the voltage drop between points B and C?
a. 5 Vdc
b. 15 Vdc
c. 10 Vdc
d. 7.5 Vdc
6. What is the value of resistor R2?
a. 500 Ω
b. 1000 Ω
c. 1500 Ω
d. 3000 Ω
5. What is the voltage drop between points B and C?
a. 5 Vdc
b. 15 Vdc
c. 10 Vdc
d. 7.5 Vdc
6. What is the value of resistor R2?
a. 500 Ω
b. 1000 Ω
c. 1500 Ω
d. 3000 Ω
8. Refer to Fig. 4– 5. Calculate the total resistance of the parallel circuit.
a. 450 Ω
b. 500 Ω
c. 90 Ω
d. 900 Ω
9. How much current flows through resistor R3?
a. 2.7 mAdc
b. 1.8 mAdc
c. 25.5 mAdc
d. 29.55 mAdc
10. What is the resistance value of R3?
a. 1059 Ω
b. 1500 Ω
c. 10 k Ω
d. 15 k Ω
11. How much current is entering a circuit junction if the currents leaving the junction are 2
mAdc, 10 mAdc, and 5.8 mAdc?
a. 0.0178 Adc
b. 17.8 mAdc
c. 17 800 µAdc
d. All of the above.
12. In Question 5, the algebraic sum of the currents entering and leaving the junction is:
a. 17.8 mAdc
b. 35.6 mAdc
c. Zero
d. None of the above.
ANSWER NUMBER 4 TO 12
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