Question

A $3\frac{1}{2}$ digit DVM has a lowest measuring range of 200 mV. Hence it can be concluded that

• A. Its best resolution is 0.1 mV
  
• B. It's poorest resolution is 0.2 mV
• C. Its accuracy is at least 0.05%
• D. The maximum voltage that can be measured in this range is 199.9 mV

Answer 1

The correct option is D The maximum voltage that can be measured in this range is 199.9 mV

The DVM has $3\frac{1}{2}$ digit display.

Therefore, its scale resolution is 0.001.
It's Resolution in 200 mV range is $0.001\times 200mV=0.2mV.$ The maximum voltage that can be measured in this 200 mV lowest range is 199.9 mV.