What happens to the drain current in a MOSFET when the gate-source voltage incre

Practice Questions

Q1
What happens to the drain current in a MOSFET when the gate-source voltage increases?
  1. It decreases
  2. It remains constant
  3. It increases
  4. It becomes zero

Questions & Step-by-Step Solutions

What happens to the drain current in a MOSFET when the gate-source voltage increases?
  • Step 1: Understand what a MOSFET is. A MOSFET is a type of transistor used to control electrical signals.
  • Step 2: Identify the gate-source voltage (Vgs). This is the voltage difference between the gate and the source terminals of the MOSFET.
  • Step 3: Know that the drain current (Id) is the current flowing from the drain to the source of the MOSFET.
  • Step 4: Realize that when you increase the gate-source voltage (Vgs), it enhances the electric field in the MOSFET.
  • Step 5: Understand that a stronger electric field allows more charge carriers to flow from the source to the drain.
  • Step 6: Conclude that as Vgs increases, the drain current (Id) also increases, especially when the MOSFET is in saturation.
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