21. There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage ________.
(a) is 6 V
(b) depends on the current flow
(c) depends on the resistor values
(d) is 30 V
22. A 12 V battery is connected across a series combination of 68 Ω, 47 Ω, 220 Ω, and 33 Ω. The amount of current is ________.
(a) 326 mA
(b) 16.3 mA
(c) 32.6 mA
(d) 163 mA
23. Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is ________.
(a) 3 A
(b) 1 A
(c) 4 A
(d) 0.3 A
24. When one of three series resistors is removed from a circuit and the circuit is reconnected, the current ________.
(a) increases
(b) increases by one-third
(c) decreases by one-third
(d) decreases by the amount of current through the removed resistor
25. To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed ________.
(a) between the second and third resistors
(b) at the negative terminal of the source
(c) between the third and fourth resistors
(d) at any point in the circuit
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5555555555 18. The following resistors (one each) are connected in a series circuit: 470 Ω, 680 Ω, 1 kΩ, and 1.2 kΩ. The voltage source is 20 V. Current through the 680 Ω resistor is approximately ________. (a) 60 mA (b) 30 mA (c) 6 mA (d) 300 mA- 5555555555 22. Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is ________. (a) 900 μA (b) 9 mA (c) 90 mA (d) 800 μA
- 5555555555 15. A series circuit has a 24 V source and a total resistance of 120 Ω. The current through each resistor is ________. (a) 24 mA (b) 200 mA (c) 120 mA (d) 20 mA
- 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 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