Which color band indicates tolerance of ±10%?

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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 band indicates tolerance of ±10%?

Explanation:
Tolerance bands on resistors show how much the actual resistance may vary from its nominal value. In the common four-band code, the fourth band indicates tolerance, and silver corresponds to ±10% tolerance. The other colors map to different tolerances (gold to ±5%, brown to ±1%, green to ±0.5%), so silver is the color that signifies the desired ±10% tolerance.

Tolerance bands on resistors show how much the actual resistance may vary from its nominal value. In the common four-band code, the fourth band indicates tolerance, and silver corresponds to ±10% tolerance. The other colors map to different tolerances (gold to ±5%, brown to ±1%, green to ±0.5%), so silver is the color that signifies the desired ±10% tolerance.

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