Series Parallel Circuits – Exercise – 1

6. The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are) ________.

(a) 6.8 kΩ
(b) 2.2 kΩ
(c) 6.8 kΩ and 10 kΩ
(d) 2.2 kΩ and 1 kΩ

7. The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is ________.

(a) 1,650 Ω
(b) 1,078 Ω
(c) 77.8 Ω
(d) 778 Ω

8. The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of ________.

(a) 470 Ω or 1.2 kΩ
(b) 3 kΩ
(c) 470 Ω
(d) 1.2 kΩ

9. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is ________.

(a) 24 V
(b) 12 V
(c) 0 V
(d) 6 V

10. A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?

(a) 1 MΩ
(b) 100 kΩ
(c) 1 kΩ
(d) 330 Ω

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