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Electronic Devices & CircuitsFET & MOSFET

In an ideal MOSFET, the DC gate current is approximately?

  • AEqual to drain current
  • BEqual to source current
  • CZero
  • DInfinite
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Correct Answer: C. Zero
Explanation: The MOS gate is insulated from the channel by an oxide layer, so ideal steady-state gate current is zero, giving very high input resistance.
Reference: Standard electronics: MOSFET gate
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