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  • Question

  • If the voltage in the given circuit was cut in half, what would the current equal? 10 mA 30 mA 60 mA

    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

  • Correct Answer
  • 30 mA 

    • Ohm's Law problems

    Search Results

    • 1. 

      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
    • 2. 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
    • 3. 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
    • 4. 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
      • Discuss
    • 5. A battery's capacity to deliver power is measured in

    • Options
    • A. kWh
    • B. Ah
    • C. Wh
    • D. Vh
      • Discuss
    • 6. 

      What is the power in the given circuit?


    • Options
    • A. 3.6 W
    • B. 35 W
    • C. 175 W
    • D. 245 W
      • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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

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