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- Question
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
- Correct Answer
- Two - a negative terminal and a positive terminal
- 1. 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
- 2. 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
- 3. The rotating coil of wire in an electric motor is called the:
Options- A. armature
- B. brush
- C. commutator
- D. loop
- E. None of the above Discuss
- 4. Silicon atoms combine into an orderly pattern called a
Options- A. Crystal
- B. Covalent bond
- C. Semiconductor
- D. Valence orbit
- E. None of the above Discuss
- 5. Which one of the following devices is most often used for measuring electrical potential difference?
Options- A. Voltmeter
- B. Ohmmeter
- C. Ammeter
- D. Wattmeter
- E. None of the above Discuss
- 6. 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
- 7. 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
- 8. 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 Discuss
- 9. 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
- 10. 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
Electronic Principles problems
Search Results
Correct Answer: The actual frequency of a sine waveform is 1.41 times the working frequency
Correct Answer: Counterclockwise
Correct Answer: armature
Correct Answer: Crystal
Correct Answer: Voltmeter
Correct Answer: increasing the area of the plates
Correct Answer: P = E2/R
Correct Answer: 50 Ohm or more
Correct Answer: I = E/R
Correct Answer: Trie force that causes electrons to flow
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