Choose the correct statementa)MOSFET is a unipolar, voltage controlled, two terminal deviceb)MOSFET is a bipolar, current controlled, three terminal devicec)MOSFET is a unipolar, voltage controlled, three terminal deviced)MOSFET is a bipolar, current controlled, two terminal deviceCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor. It is a type of transistor that is widely used in electronic circuits for various applications.

A MOSFET is considered a unipolar device because its operation relies primarily on the movement of one type of charge carrier, either electrons or holes, in the channel region.

MOSFETs are voltage controlled devices, meaning the control of current flow through the device is achieved by applying a voltage to the gate terminal. By varying the gate voltage, the MOSFET can be switched between its on and off states, controlling the flow of current through the channel.

A MOSFET has three terminals: the gate, source, and drain. The gate terminal controls the flow of current through the channel between the source and drain terminals.

Therefore, the correct statement is C: MOSFET is a unipolar, voltage controlled, three terminal device.

Answer

MOSFET is a unipolar, voltage controlled, three terminal device.

Explanation:
A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of transistor that is widely used in electronic devices and integrated circuits. It is a three-terminal device consisting of a gate (G), source (S), and drain (D). The MOSFET is a voltage-controlled device, meaning its operation is controlled by the voltage applied to its gate terminal.

Unipolar Device:
A MOSFET is categorized as a unipolar device because its operation primarily relies on the movement of only one type of charge carrier, either electrons (n-channel MOSFET) or holes (p-channel MOSFET). In the case of an n-channel MOSFET, the majority carriers are electrons, and in a p-channel MOSFET, the majority carriers are holes. This distinguishes MOSFETs from bipolar transistors, which rely on both electron and hole movement.

Voltage Controlled:
The MOSFET is a voltage-controlled device because the voltage applied to the gate terminal determines the flow of current between the source and drain terminals. By varying the gate voltage, the MOSFET can be turned on or off, allowing or blocking the current flow. The gate voltage controls the formation or depletion of the conducting channel in the MOSFET's semiconductor material.

Three-Terminal Device:
The MOSFET has three terminals: gate (G), source (S), and drain (D). The gate terminal is used to control the device's operation by applying a voltage. The source terminal is the reference point for the current flow, and the drain terminal is where the current enters or exits the device. The three terminals allow for the control and manipulation of current flow through the MOSFET.

In summary, the correct statement is that the MOSFET is a unipolar, voltage-controlled, three-terminal device. It operates based on the movement of one type of charge carrier, electrons or holes, and its operation is controlled by the voltage applied to the gate terminal.

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