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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