Which color indicates a tolerance of ±5% in the resistor color code?

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Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which color indicates a tolerance of ±5% in the resistor color code?

Explanation:
Tolerance is the allowed variation from a resistor’s stated value, shown by the last color band in the common four-band code. The color-to-tolerance mapping includes brown for ±1%, red for ±2%, gold for ±5%, silver for ±10%, and no color for ±20%. Gold corresponds to ±5%, so it’s the color that indicates that tolerance. The other colors indicate different tolerances (brown, red, or silver), not ±5%.

Tolerance is the allowed variation from a resistor’s stated value, shown by the last color band in the common four-band code. The color-to-tolerance mapping includes brown for ±1%, red for ±2%, gold for ±5%, silver for ±10%, and no color for ±20%. Gold corresponds to ±5%, so it’s the color that indicates that tolerance. The other colors indicate different tolerances (brown, red, or silver), not ±5%.

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