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Home ‣ Electronics ‣ Ohm's Law Comments
  • Question

  • If the voltage across a fixed value of resistance is increased five times, what does the current do?


  • Options
  • A. It increases by a factor of five.
  • B. It decreases by a factor of five.
  • C. It stays the same.
  • D. Not enough information

  • Correct Answer
  • It increases by a factor of five. 

    • Ohm's Law problems

    Search Results

    • 1. A battery's capacity to deliver power is measured in

    • Options
    • A. kWh
    • B. Ah
    • C. Wh
    • D. Vh
      • Discuss
    • 2. Energy is defined as the ability to

    • Options
    • A. produce heat
    • B. produce light
    • C. produce sound
    • D. All of the above
      • Discuss
    • 3. "Half-splitting" is

    • Options
    • A. a means for nuclear fuel cells to produce electricity
    • B. a means of isolating a problem in a circuit
    • C. a means for reducing a high ac voltage to a low dc voltage
    • D. a means of limiting current in a circuit
      • Discuss
    • 4. What is the kilowatt-hour consumption of a 40 W lamp if it remains on for 1750 h?

    • Options
    • A. 43.75
    • B. 70
    • C. 43,750
    • D. 70,000
      • Discuss
    • 5. What electromotive force would cause 20 A of current to flow through a 500 Ω resistor?

    • Options
    • A. 0.04 V
    • B. 2.5 V
    • C. 25.0 V
    • D. 10,000 V
      • Discuss
    • 6. If current through a resistance is halved

    • Options
    • A. the resistance is halved
    • B. the voltage is halved
    • C. the voltage doubles
    • D. none of the above
      • Discuss
    • 7. 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
    • 8. 

      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
    • 9. 

      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
    • 10. 

      What is the power in the given circuit?


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

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