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Home ‣ Electrical Engineering ‣ Ohm's Law See What Others Are Saying!
- Question
What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?
Options- A. 9.7 Ω
- B. 97 Ω
- C. 23 Ω
- D. 230 Ω
- Correct Answer
- 230 Ω
- 1. The true power in a capacitor is zero.
Options- A. True
- B. False Discuss
- 2. Parallel resistors are connected between the same two points.
Options- A. True
- B. False Discuss
- 3. A smaller-value load resistor will cause the output voltage to change more than a larger-value one.
Options- A. True
- B. False Discuss
- 4. In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.
Options- A. True
- B. False Discuss
- 5. A reflective load is a load as it appears to the source in the primary of a transformer.
Options- A. True
- B. False Discuss
- 6. A transformer changes ac to dc.
Options- A. True
- B. False Discuss
- 7. Series aiding is a term sometimes used to describe voltage sources of the same polarity in series.
Options- A. True
- B. False Discuss
- 8. The number 4,500,000 can be expressed as
Options- A. 4,500 × 106
- B. 4.5 × 106
- C. 4.5 × 10-3
- D. either 4,500 × 104 or 4.5 × 106 Discuss
- 9. Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is
Options- A. 15 mA
- B. 5 mA
- C. 2 mA
- D. 0 A Discuss
- 10. The branch current method uses
Options- A. Kirchhoff's voltage and current laws
- B. Thevenin's theorem and Ohm's law
- C. Kirchhoff's current law and Ohm's law
- D. the superposition theorem and Thevenin's theorem Discuss
More questions
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: 4.5 × 106
Correct Answer: 0 A
Correct Answer: Kirchhoff's voltage and current laws
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