Moderate

n a common-source JFET amplifier, the output voltage is _____________?

Correct answer: A. 180o out of phase with the input

  • A. 180o out of phase with the input
  • B. in phase with the input
  • C. 90o out of phase with the input
  • D. taken at the source

Explanation

In a common-source amplifier, an increase in drain current produces a larger voltage drop across the drain resistor, making the drain voltage fall. Therefore the output is 180° out of phase with the input.

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