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- Question
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?
Options- A. 5 Ohm
- B. 50 Ohm or more
- C. 100 Ohm
- D. 6 Ohm
- E. None of the above
- Correct Answer
- 50 Ohm or more
- 1. Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?
Options- A. P = I2R
- B. P = IE
- C. P = E2/R
- D. I = P/E
- E. None of the above Discuss
- 2. The value of a capacitor can be made larger by:
Options- A. increasing the area of the plates
- B. decreasing the area of the plates
- C. increasing the frequency of the applied voltage
- D. increasing the voltage applied to the plates
- E. None of the above Discuss
- 3. What is the smallest number of polarities required for current flow?
Options- A. One - a negative terminal
- B. Two - a negative terminal and a positive terminal
- C. Three - negative, positive and neutral terminals
- D. Four - two negative and two positive
- E. None of the above Discuss
- 4. Which one of the following statements most accurately applies to the frequency of a waveform?
Options- A. The actual frequency of a sine waveform is 1.41 times the working frequency
- B. Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
- C. The higher the amplitude of a waveform, the higher its frequency
- D. The longer the period of a waveform, the lower its frequency
- E. None of the above Discuss
- 5. Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
Options- A. Clockwise
- B. Counterclockwise
- C. Out of this page
- D. Into this page
- E. None of the above Discuss
- 6. Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?
Options- A. E = PR
- B. E = I2R
- C. I = E/R
- D. I = ER
- E. None of the above Discuss
- 7. Voltage is
Options- A. The flow of charged particles through a material
- B. The smallest electrically charged particle
- C. Trie force that causes electrons to flow
- D. The number of free electrons in an atom
- E. None of the above Discuss
- 8. The north pole of a magnet is the one:
Options- A. that has its molecules arranged in a random pattern
- B. that would be attracted to the earth's north magnetic pole
- C. that would be repelled by the south pole of another magnet
- D. that would be attracted to the earth's south magnetic pole
- E. None of the above Discuss
- 9. A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?
Options- A. 90 Ohm - 101 ohm
- B. 90 Ohm - 110 ohm
- C. 98 Ohm - 100.1 ohm
- D. 99 Ohm - 102 ohm
- E. None of the above Discuss
- 10. What is the turns ratio for the transformer specified in the above question?
Options- A. 10.738
- B. 0.707
- C. 1.5
- D. 0.575
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: P = E2/R
Correct Answer: increasing the area of the plates
Correct Answer: Two - a negative terminal and a positive terminal
Correct Answer: The actual frequency of a sine waveform is 1.41 times the working frequency
Correct Answer: Counterclockwise
Correct Answer: I = E/R
Correct Answer: Trie force that causes electrons to flow
Correct Answer: that would be attracted to the earth's north magnetic pole
Correct Answer: 90 Ohm - 110 ohm
Correct Answer: 0.707
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