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Cards (22)

  • What is the purpose of the resistor color code?

    It is used to indicate the nominal value and tolerance of resistors.
  • How is the power rating of a resistor determined?
    The power rating is not indicated in the color code and must be determined by experience using the physical size of the resistor.
  • How many color bands are used for resistors with ±5% or ±10% tolerance?
    Four color bands are used.
  • How many color bands are used for resistors with ±1% or ±2% tolerance?
    Five color bands are used.
  • What does the color code for a 4-band resistor represent?
    • 1st Band: 1st Significant Digit
    • 2nd Band: 2nd Significant Digit
    • 3rd Band: Multiplier
    • 4th Band: Tolerance
  • How do you determine the nominal resistance value from a 4-band resistor?
    You use the first two bands for significant digits, the third band as a multiplier, and the fourth band for tolerance.
  • What is the nominal value and tolerance for a resistor with color bands Brown, Black, Red, and Gold?
    The nominal value is 1,000Ω1,000 \, \Omega with a tolerance of ±5%.
  • What is the typical way to express resistance values for resistors?
    Resistance values are typically expressed in if the resistance is ≥ 1,000 Ω, and in MΩ if the resistance is ≥ 1,000,000 Ω.
  • What is the conversion table used for in resistor values?
    • Converts resistance values from Ω to or MΩ
    • Helps in understanding the scale of resistance
  • How do you calculate the nominal resistance value for a resistor with a nominal value of 10×102Ω10 \times 10^2 \, \Omega?

    The nominal resistance value is 1,000Ω1,000 \, \Omega.
  • What is the nominal resistance and tolerance for a resistor with color bands Yellow, Violet, Orange, and Gold?
    The nominal resistance is 47,000Ω47,000 \, \Omega with a tolerance of ±5%.
  • How do you determine the nominal resistance value for a resistor with color bands Orange, Orange, Green, and Silver?
    The nominal resistance value is 3,500,000Ω3,500,000 \, \Omega with a tolerance of ±10%.
  • How do you read the color code on a resistor?
    • For 4-band resistors, the last band (gold or silver) indicates tolerance.
    • For 5-band resistors, the first band is the one closest to the lead.
  • What color band indicates a tolerance of ±10%?
    Silver.
  • What color band indicates a tolerance of ±5%?
    Gold.
  • What is the significance of the first band in a 5-band resistor?
    The first band indicates the first significant digit of the resistance value.
  • How do you specify the color code for a resistor with a nominal value of 2.5MΩ2.5M \, \Omega and a tolerance of ±1%?

    The color code would be Green, Black, Red, Yellow, and Brown.
  • What is the nominal resistance and tolerance for a resistor with color bands Brown, Green, Red, and Gold?
    The nominal resistance is 1,500Ω1,500 \, \Omega with a tolerance of ±5%.
  • What are the steps to determine the color code for a resistor?
    1. Identify the number of bands (4 or 5).
    2. Use the color code table to find significant digits and multiplier.
    3. Determine tolerance from the last band.
  • What is the nominal resistance value for a resistor with color bands Red, Green, Blue, and Silver?
    The nominal resistance is 2,500,000Ω2,500,000 \, \Omega with a tolerance of ±10%.
  • What is the nominal resistance value for a resistor with color bands Black, Brown, Red, and Gold?
    The nominal resistance is 1,000Ω1,000 \, \Omega with a tolerance of ±5%.
  • What is the final takeaway about working with the resistor color code?
    • Understanding the color code is essential for identifying resistor values.
    • It simplifies the process of working with electronic components.