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Electronic Devices & CircuitsFET & MOSFET

In a MOSFET, channel-length modulation in saturation causes the drain current to?

  • AIncrease slightly as VDS increases
  • BRemain exactly independent of VDS in every real device
  • CFall exactly to zero
  • DReverse direction automatically
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Correct Answer: A. Increase slightly as VDS increases
Explanation: Channel-length modulation shortens the effective channel as VDS rises, giving the saturation-region output characteristic a finite positive slope.
Reference: Standard electronics: MOSFET channel-length modulation
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