Multiple Choice Question On Series Parallel Circuits
1. 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
Answer: Option B
2. Two 1.2 k Ω resistors are in series and this series combination is in parallel with a 3.3 k Ω resistor. The total resistance is
A. 138 Ω
B. 1,389 Ω
C. 5,700 Ω
D. 880 Ω
Answer: Option B
3. The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage
A. decreases
B. increases
C. remains the same
D. becomes zero
Answer: Option A
4. A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?
A. 1 kΩ
B. 24 kΩ
C. 18 kΩ
D. 12 kΩ
Answer: Option D
5. A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
A. 12 V
B. 24 V
C. 0 V
D. 6 V
Answer: Option A
6. A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?
A. 1 MΩ
B. 100 kΩ
C. 1 kΩ
D. 330 Ω
Answer: Option A