Discussion
Why is the base voltage rather than the base current specified in a divider design?
Answer: B
A stiff divider is a voltage source, so the base voltage is what it holds constant, and the emitter resistor then converts that into a current. The base current is whatever the device happens to draw and is exactly the beta-dependent quantity the arrangement is avoiding. Specifying the quantity a circuit actually controls, rather than one that follows from it, is what keeps a design's assumptions visible.
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