🔍 Key Concepts

• Analog multimeter zero-adjust for resistance (ohms) ranges • Role of the internal battery in resistance measurements • What it means when you cannot reach zero with the ohms adjustment knob

💭 Think About

• On an analog meter, what is supposed to happen to the pointer when the test leads are shorted together on an ohms range? • If the zero-ohms adjustment knob cannot bring the pointer exactly to zero, what does that tell you about the condition of the internal battery (or meter circuitry)? • Which option addresses the root problem, and which options either bypass the meter’s normal resistance function or misuse the instrument?

✅ Before You Answer

• Verify how resistance is normally measured on an analog multimeter: the scale, the zero adjustment, and the role of the internal battery. • Check which choice describes a standard, manufacturer-recommended procedure for fixing a zero-adjust failure on the ohms ranges. • Eliminate any choice that suggests measuring resistance by methods that do not use the meter’s intended ohms function or that change scales without fixing the underlying issue.