Question

The Metal Oxide Semicoductor (MOS) is a ........ transistor that depends on the flow of only one type of carrier, which may be electrons or holes?

• A. Unipolar
• B. Bipolar
• C. n-polar
• D. None of these

Answer 1

The correct option is A Unipolar

The Metal Oxide Semiconductor (MOS) is a unipolar transistor that depends on the flow of only one type of carrier, which may be electrons or holes.

All FET (field effect transistor) can be called UNIPOLAR devices because the charge carriers that carry the current through the device are all of the same type that is either holes or electrons, but not both. This distinguishes FETs from the bipolar devices in which both holes and electrons are responsible for current flow in any one device.