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 At threshold Voltage, the surface potential is:
  • a)
    – Fermi potential
  • b)
    Fermi potential
  • c)
    2 Fermi potential
  • d)
    -2 Fermi potential
Correct answer is option 'A'. Can you explain this answer?
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At threshold Voltage, the surface potential is:a)– Fermi potenti...
When surface potential reaches –fermi potential, the surface inversion occurs. The gate voltage which brings these changes is known as threshold voltage.
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At threshold Voltage, the surface potential is:a)– Fermi potenti...
Surface Potential at Threshold Voltage
Understanding the concept of surface potential at threshold voltage is crucial in the field of electrical engineering. Let's break down this concept into key points for better comprehension.

Threshold Voltage:
- Threshold voltage is the minimum voltage required to create a conducting channel between the source and drain terminals in a MOSFET.
- It is the point at which the device transitions from the off state to the on state.

Surface Potential:
- Surface potential is the electrostatic potential at the interface between the gate oxide and the semiconductor surface in a MOSFET.
- It plays a significant role in determining the behavior of the device.

Relation to Fermi Potential:
- At threshold voltage, the surface potential is equal to the Fermi potential.
- The Fermi potential represents the energy level at which the probability of finding an electron is 50%.
- Therefore, at threshold voltage, the surface potential is equal to the Fermi potential.

Correct Answer:
- The correct answer to the given question is option 'A' which states that at threshold voltage, the surface potential is equal to - Fermi potential.
By understanding the relationship between surface potential and threshold voltage, one can gain insights into the functioning of MOSFET devices and their applications in various electronic circuits.
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it depends on the length of the conductor the capacitance of the line is proportional to the length of the transmission line their effect is negligible on the performance of short having a length less than 80 km and low voltage transmission accidents of the transmission line along with the conductances forms the shunted mittens the conductance and the transmission line is because of the leakage over the surface of the conductor considered a line consisting of two conductors and be each of radius are the distance between the conductors being Des shown in the diagram below minus the potential difference between the conductors and via's work QA charge on conductor QB charge on conductor vvab pencil difference between conductor and the Epsilon minus absolute primitivity QA plus QV = 0 so that QA equals QB - equals DBA equals data equals DB equals our substituting these values and voltage equation we get the capacitance between the conductors is cab is referred to as lying to line capacitance if the two conductors are in VR oppositely charge then the potential difference between them is zero then the potential of each conductor is given by one half bath the capacitance between each conductor and point of zero potential and is capacitive CN is called the capacitance to neut or capacitance to ground capacitance cab is the combination of two equal capacity and VN series thus capacitance to neutral is twice the capacitance between the conductors IE CN equals to Cave the absolute primitivity Epsilon is given by Epsilon equals epsilono Epsilon are where epsilano is the permittivity of the free space and Epsilon or is the relative primitivity of the medium prayer capacitance reactants between one conductor and neutral capacitance of the symmetrical three phase line let a balanced system of voltage be applied to a symmetrical three-phase line shown below the phasor diagram of the three phase line with equilateral spacing is shown below take the voltage of conductor to neutral as a reference phaser the potential difference between conductor and we can be written the similarly potential difference between conductors and sea is on adding equations one and two we get also combining equation three and four from equation 6 and 7 the line to neutral capacitance the capacitance of symmetrical three phase line is same as that of the two wire line Related: Capacitance of Transmission Lines?

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At threshold Voltage, the surface potential is:a)– Fermi potentialb)Fermi potentialc)2 Fermi potentiald)-2 Fermi potentialCorrect answer is option 'A'. Can you explain this answer?
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