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An amplifier has an output impedance of \( 0.08 \ \Omega \) into \( 8 \ \Omega \). Its damping factor is

  • A.1000
  • B.100
  • C.10
  • D.0.01

Answer: B

Dividing the load by the output impedance:

\[ DF = \frac{8}{0.08} = 100 \]

giving 100. Inverting the ratio gives 0.01, which would describe an amplifier with a higher output impedance than its load. Because the figure depends on the load, quoting a damping factor without naming the impedance it was measured into says very little.

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