[amp_mcq option1=”Effective drain voltage” option2=”Effective gate voltage” option3=”Channel length” option4=”Effective source voltage” correct=”option2″]
The correct answer is: B. Effective gate voltage
Surface mobility is a measure of how easily charge carriers can move through a semiconductor material. It is affected by the effective gate voltage, which is the voltage difference between the gate and the source terminals of a MOSFET. The effective gate voltage controls the electric field in the channel region of the MOSFET, which in turn determines the mobility of the charge carriers.
The other options are incorrect because they do not directly affect the effective gate voltage.
- Effective drain voltage is the voltage difference between the drain and the source terminals of a MOSFET. It does not directly affect the mobility of the charge carriers.
- Channel length is the distance between the source and drain terminals of a MOSFET. It does not directly affect the mobility of the charge carriers.
- Effective source voltage is the voltage difference between the source and the substrate terminals of a MOSFET. It does not directly affect the mobility of the charge carriers.