5555555555 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
5555555555 13. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is ________. (a) 1,403 Ω (b) 4.7 kΩ (c) 2 kΩ (d) 3,403 Ω
5555555555 11. Six resistors are in parallel. The two lowest-value resistors are both 1.2 kΩ. The total resistance ________. (a) is less than 6 kΩ (b) is greater than 1.2 kΩ (c) is less than 1.2 kΩ (d) is less than 600 Ω
5555555555 19. The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 kΩ resistor is ________. (a) 25% (b) 20% (c) 100% (d) 50%
5555555555 17. A series circuit consists of three resistors. Two resistors are 1.2 kΩ each. The total resistance is 12 kΩ. The value of the third resistor ________. (a) is 9,600 Ω (b) is 960 Ω (c) is 1.2 kΩ (d) cannot be determined