Ultimate Quiz On Basic Electronics Knowledge

29 Questions | Total Attempts: 3112

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Ultimate Quiz On Basic Electronics Knowledge

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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