Which BJT bias arrangement is generally more stable against beta variation than simple fixed-base bias?

  • AVoltage-divider bias with emitter resistance
  • BFixed-base bias with no emitter resistor
  • CCollector left open
  • DBase and collector both grounded
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Correct Answer: A. Voltage-divider bias with emitter resistance
Explanation: Voltage-divider bias combined with emitter feedback makes the operating point less dependent on transistor beta than simple fixed-base bias.
Reference: Standard analog electronics: voltage-divider bias