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Analog ElectronicsTransistor Amplifiers

A BJT has Early voltage VA = 100 V and IC = 1 mA. Its small-signal output resistance ro is approximately?

  • A1 kOhm
  • B10 kOhm
  • C100 kOhm
  • D1 MOhm
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Correct Answer: C. 100 kOhm
Explanation: ro ≈ VA/IC = 100 V / 0.001 A = 100 kOhm.
Reference: Standard analog electronics: transistor amplifiers
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