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  • Question

  • The voltage supplying the current in the given circuit is _____. 2.5 V 25 V 250 V 2.5 kV V = IR = 25

    The voltage supplying the current in the given circuit is _____.


  • Options
  • A. 2.5 V
  • B. 25 V
  • C. 250 V
  • D. 2.5 kV

  • Correct Answer
  • 25 V 

    Explanation
    V = IR

    = 250 x 10^-6 x 100 x 10^3

    = 250 x 100 x 10^(-6+3)

    = 250 x 100 x 10^-3

    = 25 x 1000 x 10^-3

    = 25 x 10^3 x 10^-3

    = 25 x 10^0

    = 25 x 1 [Anything power 0 is 1]

    = 25 volts.

    Ohm's Law problems

    Search Results

    • 1. The power is ___ if 200 J of energy are used in 10 s.

    • Options
    • A. 2 W
    • B. 5 W
    • C. 20 W
    • D. 50 W
      • Discuss
    • 2. The number of joules used in 1 second is always equal to the number of _______.

    • Options
    • A. siemens
    • B. coulombs
    • C. amperes
    • D. watts
      • Discuss
    • 3. Resistance and current are _________.

    • Options
    • A. directly proportional
    • B. inversely proportional
    • C. not related
    • D. similar to voltage
      • Discuss
    • 4. 

      The power rating for the resistor in the given circuit should be at least ______.


    • Options
    • A. 1/4 W
    • B. 1/2 W
    • C. 1 W
    • D. 2 W


      • Discuss
    • 5. 

      The power rating for the resistor in the given circuit should be at least ___.


    • Options
    • A. 1/4 W
    • B. 1/2 W
    • C. 1 W
    • D. 2 W
      • Discuss
    • 6. The voltage across a 2.2 kΩ resistor is ___ if 3 mA of current is flowing through it.

    • Options
    • A. 6.6 V
    • B. 7.33 V
    • C. 1.4 V
    • D. 0.8 V
      • Discuss
    • 7. The current is ___ if the voltage across a 5 kΩ resistor is 25 V.

    • Options
    • A. 200 mA
    • B. 125 mA
    • C. 75 mA
    • D. 5 mA
      • Discuss
    • 8. The phase angle will decrease in a series RL circuit if the inductance is increased.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. As frequency decreases in a parallel RL circuit the impedance also decreases.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The current lags the source voltage in a series RL circuit.

    • Options
    • A. True
    • B. False
      • Discuss

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