[amp_mcq option1=”Open, Closed” option2=”Closed, Open” option3=”Open, Open” option4=”Close, Close” correct=”option1″]
The correct answer is A. Open, Closed.
An enhancement-mode MOSFET is a type of transistor that can only conduct current when a gate voltage is applied. When the gate voltage is zero, the channel between the source and drain is depleted of charge carriers, and the transistor acts as an open switch. When a positive gate voltage is applied, it attracts electrons to the channel, which allows current to flow.
A depletion-mode MOSFET is a type of transistor that can conduct current even when the gate voltage is zero. When the gate voltage is zero, there is a small amount of charge carriers in the channel, which allows current to flow. When a negative gate voltage is applied, it repels electrons from the channel, which further depletes the channel of charge carriers and reduces the current flow.
In conclusion, an enhancement-mode MOSFET acts as an open switch when the gate voltage is zero, and a depletion-mode MOSFET acts as a closed switch when the gate voltage is zero.