Which drawback is commonly associated with analog meters compared to digital meters?

Which drawback is commonly associated with analog meters compared to digital meters?

• A. Polarity sensitivity
• B. Digital display
• C. Higher DC accuracy than digital
• D. No scale

Answer: (A)

Analog meters rely on a moving-coil (galvanometer) or moving-iron mechanism where the needle’s deflection is directly tied to the direction of current flow. Because the magnetic interaction is directional, reversing the leads or measuring a signal that can change polarity can cause the meter to give a misleading reading, or even require you to interpret a negative indication that the analog scale isn’t set up to show clearly. Digital meters, on the other hand, convert the signal with electronics and present a numerical value (often with a clear sign) regardless of lead orientation, making polarity an automatic part of the reading. So the common drawback of analog meters compared to digital ones is their sensitivity to polarity.

Analog meters rely on a moving-coil (galvanometer) or moving-iron mechanism where the needle’s deflection is directly tied to the direction of current flow. Because the magnetic interaction is directional, reversing the leads or measuring a signal that can change polarity can cause the meter to give a misleading reading, or even require you to interpret a negative indication that the analog scale isn’t set up to show clearly. Digital meters, on the other hand, convert the signal with electronics and present a numerical value (often with a clear sign) regardless of lead orientation, making polarity an automatic part of the reading. So the common drawback of analog meters compared to digital ones is their sensitivity to polarity.