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Finite Resistance between Drain and Source Formula

GoVoltage Dependent Resistance in MOSFET Formula

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A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit. Check FAQs

R fi = mod \underset{̲}{u} s \frac{V a}{i d}

R_fi - Finite Resistance?V_a - Positive DC Voltage?i_d - Drain Current?

Finite Resistance between Drain and Source Example

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With units

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Here is how the Finite Resistance between Drain and Source equation looks like with Values.

Here is how the Finite Resistance between Drain and Source equation looks like with Units.

Here is how the Finite Resistance between Drain and Source equation looks like.

0.0638 = mod \underset{̲}{u} s \frac{0.0051}{0.08}

0.0638kΩ = mod \underset{̲}{u} s \frac{0.0051V}{0.08mA}

0.0638 = mod \underset{̲}{u} s \frac{0.0051}{0.08}

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Finite Resistance between Drain and Source Solution

Follow our step by step solution on how to calculate Finite Resistance between Drain and Source?

FIRST Step Consider the formula

R fi = mod \underset{̲}{u} s \frac{V a}{i d}

Next Step Substitute values of Variables

∴

R fi = mod \underset{̲}{u} s \frac{0.0051V}{0.08mA}

Next Step Convert Units

∴

R fi = mod \underset{̲}{u} s \frac{0.0051V}{8E-5A}

Next Step Prepare to Evaluate

∴

R fi = mod \underset{̲}{u} s \frac{0.0051}{8E-5}

Next Step Evaluate

∴

R fi = 63.75Ω

Next Step Convert to Output's Unit

∴

R fi = 0.06375kΩ

LAST Step Rounding Answer

∴

R fi = 0.0638kΩ

Finite Resistance between Drain and Source Formula Elements

Variables

Functions

Finite Resistance

A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit.

Symbol: R_fi

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Finite Resistance

Positive DC Voltage

Positive DC Voltage is voltage at the positive terminal of a DC voltage source is higher than that at the negative terminal, resulting in a flow of electric current in a specific direction.

Symbol: V_a

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Positive DC Voltage

Drain Current

Drain current is the current that flows between the drain and the source terminals of a field-effect transistor (FET), which is a type of transistor commonly used in electronic circuits.

Symbol: i_d

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Drain Current

modulus

Modulus of a number is the remainder when that number is divided by another number.

Syntax: modulus

Other Formulas to find Finite Resistance

Go Voltage Dependent Resistance in MOSFET

R fi = \frac{V eff}{i d}

Other formulas in Resistance category

Go MOSFET as Linear Resistance given Aspect Ratio

R ds = \frac{L}{μ s \cdot C ox \cdot W c \cdot V eff}

Go Electron Mean Free Path

λ = \frac{1}{R out \cdot i d}

Go Drain Output Resistance

R out = \frac{1}{λ \cdot i d}

Go MOSFET as Linear Resistance

R ds = \frac{1}{G}

How to Evaluate Finite Resistance between Drain and Source?

Finite Resistance between Drain and Source evaluator uses Finite Resistance = modulus(Positive DC Voltage)/Drain Current to evaluate the Finite Resistance, The Finite resistance between drain and source is the opposition offered to the drain current in saturation. It is the ratio of a positive voltage to the drain current. Finite Resistance is denoted by R_fi symbol.

How to evaluate Finite Resistance between Drain and Source using this online evaluator? To use this online evaluator for Finite Resistance between Drain and Source, enter Positive DC Voltage (V_a) & Drain Current (i_d) and hit the calculate button.

FAQs on Finite Resistance between Drain and Source

What is the formula to find Finite Resistance between Drain and Source?

The formula of Finite Resistance between Drain and Source is expressed as Finite Resistance = modulus(Positive DC Voltage)/Drain Current. Here is an example- 6.4E-5 = modulus(0.0051)/8E-05.

How to calculate Finite Resistance between Drain and Source?

With Positive DC Voltage (V_a) & Drain Current (i_d) we can find Finite Resistance between Drain and Source using the formula - Finite Resistance = modulus(Positive DC Voltage)/Drain Current. This formula also uses Modulus (modulus) function(s).

What are the other ways to Calculate Finite Resistance?

Here are the different ways to Calculate Finite Resistance-

Finite Resistance=Effective Voltage/Drain Current

Can the Finite Resistance between Drain and Source be negative?

No, the Finite Resistance between Drain and Source, measured in Electric Resistance cannot be negative.

Which unit is used to measure Finite Resistance between Drain and Source?

Finite Resistance between Drain and Source is usually measured using the Kilohm[kΩ] for Electric Resistance. Ohm[kΩ], Megohm[kΩ], Microhm[kΩ] are the few other units in which Finite Resistance between Drain and Source can be measured.

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Finite Resistance between Drain and Source Formula

​GoVoltage Dependent Resistance in MOSFET Formula

Finite Resistance between Drain and Source Example

Finite Resistance between Drain and Source Solution

Finite Resistance between Drain and Source Formula Elements

Other Formulas to find Finite Resistance

Other formulas in Resistance category

How to Evaluate Finite Resistance between Drain and Source?

FAQs on Finite Resistance between Drain and Source

Variable Name

GoVoltage Dependent Resistance in MOSFET Formula