Electrical Series and Parallel Circuits MCQ - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. 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

2. 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 %

3. A smaller-value load resistor will cause the output voltage to change more than a larger-value one.
(A) True
(B) False

4. A galvanometer is a meter that measures small amounts of voltage.
(A) True
(B) False

5. A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately
(A) 14 mA
(B) 1.4 mA
(C) 5 mA
(D) 50 mA

6. 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

7. To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.
(A) True
(B) False

8. The higher the range setting, the less the internal resistance and the greater the load effect of the voltmeter on a circuit.
(A) True
(B) False

9. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is
(A) 20,000 Ω
(B) 100,000 Ω
(C) 200,000 Ω
(D) 1,000,000 Ω

10. On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?
(A) 1 V
(B) 50 V
(C) 500 V
(D) 1,000 V

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