Ultimate Quiz On Basic Electronics Knowledge

29 Questions | Total Attempts: 4098

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Ultimate Quiz On Basic Electronics Knowledge - Quiz

The study of electronics changes day by day as the technology concerned with transistors and microchips changes. One takes up electronics to understand how electrons move in a conductor, semiconductors, vacuum or gas. Take up the ultimate quiz on basic electronics knowledge and see how far wide your knowledge extends. All the best!


Questions and Answers
  • 1. 
    Is it possible that 48V phantom power can damage a balanced, dynamic Mic?
    • A. 

      Yes, it damages the voice coil

    • B. 

      Yes, it burns out the output transformer

    • C. 

      No, it just results in a low level hum noise, as phantom power has a frequency of 60 hz

    • D. 

      No, as the same potential is applied to both leads of the voice coil

    • E. 

      Yes, if the mic is plugged in while the power is on

  • 2. 
    In what type of circuit is the total resistance smaller than the smallest resistance?
    • A. 

      Serial circuits of resistors

    • B. 

      Parallel circuits of resistors

    • C. 

      Parallel circuits of capacitors

    • D. 

      Serial circuits of inductors

    • E. 

      Parallel circuits of diodes

  • 3. 
    What is the difference between potential and voltage?
    • A. 

      No difference

    • B. 

      The voltage is the product of the two potentials

    • C. 

      The voltage is the sum of two potentials

    • D. 

      The voltage is the difference of two potentials

  • 4. 
    For which of the following wave forms is this statement true: VRMS = Vpeak
    • A. 

      Sine

    • B. 

      Square

    • C. 

      Triangle

    • D. 

      Ramp

    • E. 

      Sawtooth

  • 5. 
    What is the direction of the current flow (electron flow) in a closed DC circuit?
    • A. 

      From the more positive to the more negative potential

    • B. 

      From the more negative to the more positive potential

    • C. 

      It depends on the components in the circuit

    • D. 

      It alternates back and forth from negative to positive

    • E. 

      None of the above

  • 6. 
    Charge in motion is called...
    • A. 

      Retentivity

    • B. 

      Conductance

    • C. 

      Flux

    • D. 

      Resistance

    • E. 

      Current

  • 7. 
    The unit of potential difference is the
    • A. 

      Farad

    • B. 

      Watt

    • C. 

      Siemens

    • D. 

      Volt

    • E. 

      Ampere

  • 8. 
    Suppose you double the voltage in a simple DC circuit, and cut the resistance in half. The current will become
    • A. 

      Half as great

    • B. 

      Twice as great

    • C. 

      The same as it was before

    • D. 

      Eight times as great

    • E. 

      Four times as great

  • 9. 
    The DC voltage in a circuit is 550mV and the current is 7.2mA. What is the resistance?
    • A. 

      0.76 ohms

    • B. 

      76 ohms

    • C. 

      0.0040 ohms

    • D. 

      39.6 ohms

    • E. 

      42 ohms

  • 10. 
    A material that has extremely high electrical resistance is known as
    • A. 

      A semiconductor

    • B. 

      A paraconductor

    • C. 

      A resistor

    • D. 

      An insulator

    • E. 

      A diamagnetic substance

  • 11. 
    The length of time between a point in one cycle and the same point in the next cycle of an AC wave is the
    • A. 

      Frequency

    • B. 

      Magnitude

    • C. 

      Amplitude

    • D. 

      Period

    • E. 

      Peak to peak value

  • 12. 
    A capacitor stores electrical energy as
    • A. 

      Current

    • B. 

      Voltage

    • C. 

      A magnetic field

    • D. 

      An electric field

    • E. 

      None of the above

  • 13. 
    A series circuit has 7 ohm, 9 ohm, and 10 ohm resistors; what is its total resistance?
    • A. 

      26 ohms

    • B. 

      6 ohms

    • C. 

      23.9 ohms

    • D. 

      22 ohms

    • E. 

      5.3 ohms

  • 14. 
    What is current in a circuit with a potential difference of 240V and a resistance of 75 ohms?
    • A. 

      3.0 A

    • B. 

      3.5 A

    • C. 

      2.8 A

    • D. 

      3.4A

    • E. 

      3.2A

  • 15. 
    When electrical current flows in a DC circuit, it flows from
    • A. 

      Positive to negative

    • B. 

      The switch to the resistor

    • C. 

      The inductor to the capacitor

    • D. 

      Negative to positive

    • E. 

      Left to right

  • 16. 
    A parallel circuit consists of four 16 ohm resistors. What is the total resistance?
    • A. 

      32 ohms

    • B. 

      64 ohms

    • C. 

      2 ohms

    • D. 

      4 ohms

    • E. 

      8 ohms

  • 17. 
    A variable resistor that adjusts voltages in a circuit is
    • A. 

      A capacitor

    • B. 

      A flux capacitor

    • C. 

      A potentiometer

    • D. 

      An inductor

    • E. 

      A transformer

  • 18. 
    What is the total resistance in a parallel DC circuit with resistors valued at 12 ohms, 6 ohms, and 4 ohms?
    • A. 

      2 ohms

    • B. 

      3 ohms

    • C. 

      4 ohms

    • D. 

      5 ohms

    • E. 

      6 ohm

  • 19. 
    How many amps does a 100 watt light bulb draw when connected to a 117V supply
    • A. 

      .5 A

    • B. 

      417 mA

    • C. 

      110 V

    • D. 

      1.2 A

    • E. 

      855 mA

  • 20. 
    If a material has a low resistance,
    • A. 

      It is a good conductor

    • B. 

      It is a poor conductor

    • C. 

      The current flows mainly in the form of holes

    • D. 

      Current can only flow in one direction

    • E. 

      It is a semiconductor

  • 21. 
    A balanced line must have
    • A. 

      One conductor and a shield

    • B. 

      Two shields and two conductors

    • C. 

      Two conductors and a shield

    • D. 

      Two shields and a conductor

    • E. 

      None of the above

  • 22. 
    The rate at which electrons (charge carriers) flow is measured in
    • A. 

      Amperes

    • B. 

      Coulombs

    • C. 

      Volts

    • D. 

      Watts

    • E. 

      Watt hours

  • 23. 
    A component in an electrical circuit which can store energy but will not allow D/C current to flow is
    • A. 

      A resistor

    • B. 

      An impedance

    • C. 

      A transformer

    • D. 

      A capacitor

    • E. 

      An inductor

  • 24. 
    In electrical circuits, what is a passive device?
    • A. 

      A device that requires an external power source to operate

    • B. 

      A device that does NOT require an external power source

    • C. 

      A device that is lazy and really serves no purpose at all

    • D. 

      A device that requires a capacitator

  • 25. 
    If Power equals Current times Voltage (P = l x V) then how do you find the Current if you know the Power and Voltage
    • A. 

      Divide both sides by the power

    • B. 

      Multiply both sides by the current

    • C. 

      Multiply both sides by the voltage

    • D. 

      Divide both sides by the voltage

    • E. 

      You can't derive the Current from this formula

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