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In MOSFET the polarity of charge carriers of channel is same as

Question

In MOSFET the polarity of charge carriers of channel is same as

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Solution

In a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), the polarity of the charge carriers in the channel is the same as the polarity of the source and drain regions.

Here's a step-by-step explanation:

  1. MOSFETs are divided into two types: n-channel (NMOS) and p-channel (PMOS).

  2. In an n-channel MOSFET, the source and drain regions are n-type, meaning they have an abundance of free electrons. The channel that forms is also n-type, so the charge carriers (free electrons) are negatively charged.

  3. In a p-channel MOSFET, the source and drain regions are p-type, meaning they have an abundance of "holes" (which are effectively positive charge carriers). The channel that forms is also p-type, so the charge carriers (holes) are positively charged.

So, in summary, the polarity of the charge carriers in the channel of a MOSFET is the same as the polarity of the source and drain regions.

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