Question
The cross-section of a metal-oxide-semiconductor structure is shown schematically. Starting from an uncharged condition, a bias o f + 3 V is applied to the gate contact with respect to the body contact. The charge inside the silicon dioxide layer is then measured to be +Q. The total charge contained within the dashed box shown, upon application of bias, expressed as a multiple of Q (absolute value in Coulombs, rounded off to the nearest integer) is ____________.
Answer :
Ans. 0
The applied voltage at gate terminal can be compensated by induced charge at semiconductor surface so
as a whole it is always neutral.
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