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- Question
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?
Options- A. 0.57 V
- B. 6 V
- C. 12 V
- D. 5.7 V
- Correct Answer
- 5.7 V
- 1. Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is
Options- A. 900 µA
- B. 9 mA
- C. 90 mA
- D. 800 µA Discuss
- 2. There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage
Options- A. is 6 V
- B. depends on the current flow
- C. depends on the resistor values
- D. is 30 V Discuss
- 3. All the voltage drops and the source voltage added together in a series circuit is equal to
Options- A. the total of the voltage drops
- B. the source voltage
- C. zero
- D. the total of the source voltage and the voltage drops Discuss
- 4. Three 680 Ω resistors are connected in series with a 470 V source. Current in the circuit is
Options- A. 69 mA
- B. 230 mA
- C. 23 mA
- D. 690 mA Discuss
- 5. A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 Ω. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is
Options- A. 27 mA
- B. 2.7 mA
- C. 19 mA
- D. 190 mA Discuss
- 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
Options- A. 470 Ω or 1.2 kΩ
- B. 3 kΩ
- C. 470 Ω
- D. 1.2 kΩ Discuss
- 7. A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is
Options- A. 680 Ω
- B. 1,029 Ω
- C. 200 Ω
- D. 880 Ω Discuss
- 8. 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
Options- A. 138 Ω
- B. 1,389 Ω
- C. 5,700 Ω
- D. 880 Ω Discuss
- 9. The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage
Options- A. decreases
- B. increases
- C. remains the same
- D. becomes zero Discuss
- 10. A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
Options- A. 12 V
- B. 24 V
- C. 0 V
- D. 6 V Discuss
Series-Parallel Circuits problems
Search Results
Correct Answer: 900 µA
Correct Answer: is 30 V
Correct Answer: zero
Correct Answer: 230 mA
Correct Answer: 27 mA
Explanation:
Total P = P1 + P2 + P3 = 7/8w.
P = I2R.
I = sqrt (P/R)
Now, P = 7/8w, R = 1200 ohm.
Therefore,
I= sqrt ( (7/8)/1200 ) = 0.0270030862 = 27 mA.
P = I2R.
I = sqrt (P/R)
Now, P = 7/8w, R = 1200 ohm.
Therefore,
I= sqrt ( (7/8)/1200 ) = 0.0270030862 = 27 mA.
Correct Answer: 470 Ω
Correct Answer: 1,029 Ω
Correct Answer: 1,389 Ω
Correct Answer: decreases
Correct Answer: 12 V
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