When checking the resistance of test leads, the measurement should be:

When checking the resistance of test leads, the measurement should be:

• A. Less than 1.0 ohms
• B. Greater than 1.0 ohms
• C. Between 1.0 and 5 ohms
• D. No continuity

Answer: (A)

Test leads should contribute almost no resistance to what you’re measuring. If the leads themselves add significant resistance, your readings of the device under test will be distorted, especially for small values. That’s why the acceptable measurement is less than 1 ohm—the leads read nearly a short circuit, indicating they’re in good condition and won’t skew results. If the reading were higher than 1 ohm, it would suggest worn or damaged leads, loose connections, or corrosion, and you’d want to replace or repair them to avoid errors. “No continuity” would mean an open circuit, which is not acceptable for test leads because it would render measurements unreliable. To check, you’d usually connect the leads to each other and verify the reading is near zero, within that less-than-1-ohm range.

Test leads should contribute almost no resistance to what you’re measuring. If the leads themselves add significant resistance, your readings of the device under test will be distorted, especially for small values. That’s why the acceptable measurement is less than 1 ohm—the leads read nearly a short circuit, indicating they’re in good condition and won’t skew results.

If the reading were higher than 1 ohm, it would suggest worn or damaged leads, loose connections, or corrosion, and you’d want to replace or repair them to avoid errors. “No continuity” would mean an open circuit, which is not acceptable for test leads because it would render measurements unreliable. To check, you’d usually connect the leads to each other and verify the reading is near zero, within that less-than-1-ohm range.