Series Parallel Circuits(Electrical Engineering ) Questions and Answers
Question 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
1,650 Ω
1,078 Ω
77.8 Ω
778 Ω
Explanation:-
Answer: Option D. -> 778 Ω
Question 2. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is
24 V
12 V
0 V
6 V
Explanation:-
Answer: Option A. -> 24 V
Question 3. 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
1,403 Ω
4.7 kΩ
2 kΩ
3,403 Ω
Explanation:-
Answer: Option B. -> 4.7 kΩ
Question 4. To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.
True
False
Explanation:-
Answer: Option A. -> True
Question 5. A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?
0.57 V
6 V
12 V
5.7 V
Explanation:-
Answer: Option D. -> 5.7 V
Question 6. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is
20,000 Ω
100,000 Ω
200,000 Ω
1,000,000 Ω
Explanation:-
Answer: Option B. -> 100,000 Ω
Question 7. A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are
2 V, 4 V
2 V, 2 V
2 V, 6 V
4 V, 6 V
Explanation:-
Answer: Option A. -> 2 V, 4 V
Question 8. 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?
1 MΩ
100 kΩ
1 kΩ
330 Ω
Explanation:-
Answer: Option A. -> 1 MΩ
Question 9. Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is
138 Ω
1,389 Ω
5,700 Ω
880 Ω
Explanation:-
Answer: Option B. -> 1,389 Ω
Question 10. 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?
