SERIES PARALLEL CIRCUITS QUIZ

A certain Wheatstone bridge has the following resistor values: R1 = 10 k, R2 = 720 , and R4 = 2.4 k. The unknown resistance is

24

300

3000

2.4

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A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k resistors are used to provide the two taps. The two output voltages are

2 V, 6 V

4 V, 6 V

2 V, 4 V

2 V, 2 V

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A certain voltage divider consists of two 12 k resistors in series. Which of the following load resistors will have the most effect on the output voltage?

24 k

12 k

1 M

18 k

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A certain circuit is composed of two parallel resistors. The total resistance is 1,403 . One of the resistors is 2 k. The other resistor value is

4.7 k

2 k

3403

1403

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

6.8 k and 10 k

2.2 k and 1 k

6.8 k

2.2 k

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The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is

15000000

15000

1500000

150000

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Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is

880

5700

138

1389

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On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

50 V

1,000 V

1 V

500 V

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Three 10 k resistors are connected in series. A 20 k resistor is connected in parallel across one of the 10 k resistors. The voltage source is 24 V. The total current in the circuit is

800 A

90 mA

900 A

9 mA

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When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source

increases

is cut off

decreases

remains the same

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