Question 149Electricity & Electronics - 1st Asst/Chief
70% to passWhat would be the resistance tolerance of a carbon resistor which is color coded as red, violet, brown, and silver in bands 1 thru 4 respectfully as shown in figure "A" of the illustration? Illustration EL-0103
A1%
B5%
C10%
D20%
AI Explanation
The correct answer is C) 10%. The color coding of the resistor bands indicates the resistance value and tolerance: - Red, violet, brown: The first three bands indicate the resistance value, which is 27,000 ohms (2,700 x 10^2). - Silver: The fourth band indicates the tolerance, which is 10%. The other answer choices are incorrect because: A) 1% is too tight of a tolerance for a standard carbon resistor. B) 5% is also a common tolerance, but not the one indicated by the silver band. D) 20% is too wide of a tolerance for this type of resistor.
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