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Ohm's Law problems

  • 1. Power supplies are regulated to prevent the output voltage from changing due to changes in the

  • Options
  • A. line voltage
  • B. supply load
  • C. frequency
  • D. both line voltage and supply load
    • Discuss
  • 2. Electronics Ohm's Law: What is the pow

    What is the power in the given circuit?


  • Options
  • A. 3.92 kW
  • B. 280 W
  • C. 28.6 W
  • D. 9.8 W
    • Discuss
  • 3. Electronics Ohm's Law: If the voltage

    If the voltage in the given circuit was cut in half, what would the current equal?


  • Options
  • A. 10 mA
  • B. 30 mA
  • C. 60 mA
  • D. 90 mA
    • Discuss
  • 4. Electronics Ohm's Law: What is the pow

    What is the power in the given circuit?


  • Options
  • A. 3.6 W
  • B. 35 W
  • C. 175 W
  • D. 245 W
    • Discuss
  • 5. A damaged resistor

  • Options
  • A. may appear burned
  • B. may have an increased resistance value
  • C. may be checked with an ohmmeter
  • D. All of the above
    • Discuss
  • 6. Ohm's law is a relationship between

  • Options
  • A. voltage, current, and time
  • B. power, current, and resistance
  • C. resistance, time, and current
  • D. voltage, current, and resistance
    • Discuss
  • 7. Ohm's law describes the mathematical relationship between

  • Options
  • A. ohms, kilohms, and megohms
  • B. resistor size and resistor value
  • C. resistance, voltage, and current
  • D. none of the above
    • Discuss
  • 8. If doubling the voltage across a resistor doubles the current through the resistor then

  • Options
  • A. the resistor value decreased
  • B. the resistor value did not change
  • C. the resistor value increased
  • D. it is impossible to determine the change in the resistor value
    • Discuss
  • 9. The rate at which work is performed is called

  • Options
  • A. current
  • B. energy
  • C. power
  • D. voltage
    • Discuss
  • 10. Power supplies differ from batteries in that

  • Options
  • A. power supply output voltages are ac and not dc
  • B. power supply voltages are not stable
  • C. power supplies are low-current devices
  • D. None of the above
    • Discuss

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