The color code for a resistor's value is typically represented by three or four color bands. Each color represents a digit, and these digits are used to determine the resistor's resistance value. The standard color code sequence for resistors uses the following color-to-digit mapping:
Black: 0
Brown: 1
Red: 2
Orange: 3
Yellow: 4
Green: 5
Blue: 6
Violet: 7
Gray: 8
White: 9
The tolerance band indicates the tolerance of the resistor's value. Gold represents a tolerance of ±5%, while silver represents a tolerance of ±10%.
In your question, you have a carbon resistor with a nominal resistance of
(
47
±
4.7
)
(47±4.7) kΩ. This means the nominal resistance is 47 kΩ, and the tolerance is ±4.7 kΩ.
To encode the resistance value and tolerance into color bands:
The first two digits (4 and 7) represent the significant figures. From the color code, we have:
Yellow (4) and Violet (7).
The third digit (kΩ) represents the multiplier. From the color code, we have:
Orange (3) for 3 zeros, which means a multiplier of 1,000 (kΩ).
The fourth band represents the tolerance:
Gold for ±5%.
So, the color code for your resistor should be Yellow-Violet-Orange-Gold.
Based on the options you provided:
A. Yellow-Green-Violet-Gold - Incorrect
B. Violet-Yellow-Orange-Silver - Incorrect
C. Green-Orange-Violet-Gold - Incorrect
D. Yellow-Violet-Orange-Silver - Incorrect
None of the given options matches the correct color code, which should be Yellow-Violet-Orange-Gold.
