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Home Electronics Ohm's Law See What Others Are Saying!
  • Question
  • The number of joules used in 1 second is always equal to the number of _______.


  • Options
  • A. siemens
  • B. coulombs
  • C. amperes
  • D. watts

  • Correct Answer
  • watts 


  • More questions

    • 1. To construct an instrumentation amplifier, two op-amps and seven resistors are needed.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. The total current entering a junction may be different from the total current leaving the junction.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. 

      The inductive reactance of L2 is _____ in the given circuit.


    • Options
    • A. 3.5 kΩ
    • B. 4.4 kΩ
    • C. 16.3 kΩ
    • D. 23.3 kΩ
    • Discuss
    • 4. 

      Decreasing the gain in the given circuit could be achieved by


    • Options
    • A. reducing the amplitude of the input voltage
    • B. increasing the value of the feedback resistor
    • C. increasing the value of the input resistor
    • D. removing the feedback resistor
    • Discuss
    • 5. Decimal numbers can be converted into binary by dividing by two and recording the remainders.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. A 12-volt battery is delivering 3 amperes to a resistor. The power dissipated by the resistor is 4 watts.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. Which electromagnetic device uses brushes and a commutator?

    • Options
    • A. A speaker
    • B. A dc generator
    • C. A relay
    • D. A solenoid
    • Discuss
    • 8. In "p" type material, minority carriers would be:

    • Options
    • A. holes
    • B. dopants
    • C. slower
    • D. electrons
    • Discuss
    • 9. To operate properly, an oscillator requires an external ac input signal.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. 

      If R1 opens in the given circuit, the total current equals ___.


    • Options
    • A. 86 mA
    • B. 170 mA
    • C. 42 mA
    • D. 128 mA
    • Discuss


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