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What a MOSFET is

What a MOSFET is

Cross-section of an N-channel enhancement MOSFET showing gate, oxide layer, source, drain, P-type substrate, and an induced channel for positive gate voltage

For A-level Physics, you only need the N-channel, enhancement mode MOSFET. It has three terminals: Gate, Source, and Drain.

MOSFET (metal-oxide semiconducting field-effect transistor) (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /MOSFET (metal-oxide semiconducting field-effect transistor) (A-level only)

Step-by-step lessons on AQA A Level Physics MOSFET (metal-oxide semiconducting field-effect transistor) (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons