Discussion
Which single measurement best confirms a divider-biased stage is working as designed?
Answer: D
The emitter voltage divided by the emitter resistor gives the collector current directly, which is the quantity the design specifies. The base-emitter drop is nearly always about 0.7 V and says little, in-circuit resistance measurements are unreliable, and total supply current includes the divider. Choosing the measurement that converts in one step into the designed quantity is worth a moment's thought before any probe is placed.
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