Electronic Technician (ET) Apprentice Technical Training (ATT) Comprehensive Practice Test 2026 - Free ET Apprentice Practice Questions and Study Guide

As the tolerance of a resistor decreases, it indicates that the resistor is manufactured to have a more precise resistance value. Tolerance is a specification that describes the range within which a resistor's actual resistance value can vary from its nominal value. A lower tolerance (e.g., ±1%) means that the resistor's actual resistance is likely to be very close to the stated value, making it more accurate for precision applications. Therefore, resistors with lower tolerances are preferred in circuits where reliability and accuracy are critical, as they ensure that the electrical characteristics meet the design expectations more closely. This improved accuracy is essential for applications such as precision measurement equipment and sensitive analog circuits.