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  • Question

  • What is the color code for a 220 Ω 5% resistor?


  • Options
  • A. Red, Red, Brown, Gold
  • B. Orange, Orange, Black, Gold
  • C. Red, Red, Black, Gold
  • D. Red, Red, Brown, Silver

  • Correct Answer
  • Red, Red, Brown, Gold 

    Explanation 
    Resistor colour coding series:

Black   0 
Brown   1 
Red     2 
Orange  3 
Yellow  4 
Green   5 
Blue    6 
Violet  7  
Gray    8   
White   9 
None    20% 
Silver  10% 
Gold    5% 

Therefore Red, Red, Brown, Gold 
           2    2    101    5% 

 = 22 x 10 = 220 ohm 5% (tolerance).

    • More questions

    • 1. JFET terminal "legs" are connections to the drain, the gate, and the:

    • Options
    • A. channel
    • B. source
    • C. substrate
    • D. cathode
      • Discuss
    • 2. Capacitive reactance is inversely proportional with frequency.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. What is the average value of a 12 V peak wave?

    • Options
    • A. 3.82 V
    • B. 4.24 V
    • C. 7.64 V
    • D. 9.42 V
      • Discuss
    • 4. The DIAC is a:

    • Options
    • A. transistor
    • B. unidirectional device
    • C. three-layer device
    • D. bidirectional device
      • Discuss
    • 5. Phase angle is the difference in phase between the applied voltage (VS) and the circuit current (IT).

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Which is considered to be the common reference for a parallel circuit?

    • Options
    • A. Voltage
    • B. Current
    • C. Power
    • D. Resistance
      • Discuss
    • 7. 0.00015 V can be expressed in powers of ten as 1.5 × 10?4 V.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A 10 µF capacitor will have more capacitive reactance than a 20 µF capacitor in a 60 Hz circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. A JFET can be either a current-controlled device or a voltage-controlled device.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The effectiveness of a filter in rejecting signals beyond cutoff frequency is a function of the filter roll-off rating.

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

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