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Questions and Answers
What does the third band on a resistor indicate?
What does the third band on a resistor indicate?
A resistor has the following color bands: Red, Violet, Orange. What is its resistance?
A resistor has the following color bands: Red, Violet, Orange. What is its resistance?
If a resistor has color bands of Yellow, Black, Brown, what is its resistance value?
If a resistor has color bands of Yellow, Black, Brown, what is its resistance value?
A resistor has bands of Green, Brown, Red. What is its resistance value?
A resistor has bands of Green, Brown, Red. What is its resistance value?
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What tolerance does a resistor have if it only has three color bands?
What tolerance does a resistor have if it only has three color bands?
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Which color corresponds to the digit '6' in the resistor color code?
Which color corresponds to the digit '6' in the resistor color code?
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If a resistor has a Gold band as its tolerance indicator, what is the tolerance percentage?
If a resistor has a Gold band as its tolerance indicator, what is the tolerance percentage?
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A resistor has the following bands: Orange, Orange, Yellow. What is the resistance value of this resistor?
A resistor has the following bands: Orange, Orange, Yellow. What is the resistance value of this resistor?
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Flashcards
Resistor
Resistor
An electronic component that opposes the flow of current.
Resistor Color Codes
Resistor Color Codes
Standardized bands indicating resistor value and tolerance.
Significant Digits
Significant Digits
First two color bands that indicate resistance value in ohms.
Multiplier Band
Multiplier Band
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Tolerance Band
Tolerance Band
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Color Code Values
Color Code Values
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Multiplier Values
Multiplier Values
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Calculation of Resistor Value
Calculation of Resistor Value
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Study Notes
Resistor Color Codes
- Resistors are electronic components that oppose the flow of current. Their resistance is typically indicated by a series of colored bands.
- The color codes are standardized, allowing for easy identification of the resistor's value and tolerance.
- The color bands are read from left to right, starting with the first band.
- The first two bands represent the significant digits of the resistance value.
- The third band is the multiplier, indicating the power of 10 to which the significant digits should be multiplied.
- The fourth band (if present) represents the tolerance of the resistor's value.
Color Codes and their Corresponding Values
- Black: 0
- Brown: 1
- Red: 2
- Orange: 3
- Yellow: 4
- Green: 5
- Blue: 6
- Violet: 7
- Grey: 8
- White: 9
Multiplier Values
- Black: x 1 (10^0)
- Brown: x 10 (10^1)
- Red: x 100 (10^2)
- Orange: x 1000 (10^3)
- Yellow: x 10,000 (10^4)
- Green: x 100,000 (10^5)
- Blue: x 1,000,000 (10^6)
- Violet: x 10,000,000 (10^7)
- Grey: x 100,000,000 (10^8)
- White: x 1,000,000,000 (10^9)
Tolerance Values
- Gold: ±5%
- Silver: ±10%
- No fourth band: ±20% (this applies if there is no fourth band)
Example Calculation
- Consider a resistor with bands: Brown, Black, Red.
- First band (Brown): 1
- Second band (Black): 0
- Third band (Red): x 100
- Combining these values: 10 x 100 = 1000 ohms
- This resistor has a resistance of approximately 1000 Ω with a tolerance of ±20%.
Important Considerations
- Resistor values are approximate and may vary slightly from the indicated value due to tolerances.
- Incorrect interpretation of the color codes can lead to incorrect circuit functioning.
- Accuracy in determining the resistor's value is crucial for circuit design and functionality.
- Different resistor types and construction may have slightly varying color scales. Always double-check the specific resistor type.
- If a resistor has a fifth band, it represents an additional tolerance band, which is rarely used in basic applications.
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Description
Test your knowledge of resistor color codes and their corresponding values. Understand how to interpret the colored bands on resistors to determine their resistance value and tolerance. This quiz covers the basics of reading and applying resistor color codes.
