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Which outcome occurs when a transistor's gate voltage is increased beyond the threshold?

A)Channel depletion layer width increases
B)Channel conductivity begins to increase
C)Source and drain regions are insulated
D)Substrate current reduces significantly

💡 Explanation

Channel conductivity increases because the **inversion layer formation** connects the source and drain. Increasing gate voltage then grows this channel, therefore the answer is channel conductivity, rather than insulation which requires depletion or lack of carriers.

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