Question

Which of the following is true about MOSFET?

(a) There is no direction between channel and gate terminal

(b) There exists a channel and gate short connection

(c) Channel is not present and cannot be created

(d) They have low input impedance

The question was asked by my school teacher while I was bunking the class.

This intriguing question comes from The Insulated-Gate FET(MOSFET) in portion Field-Effect Transistors of Electronic Devices & Circuits

Answer 1

Right answer is (a) There is no direction between channel and gate terminal

The explanation: According to the physical structure of MOSFET, there is a Silicon dioxide layer between channel and gate terminal. Since Silicon dioxide acts as a resistor with infinite resistance, there is no connection between the channel and gate terminal of MOSFET.