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Thermal Voltage Formula

GoThermal Voltage using Einstein's Equation Formula

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Thermal Voltage is generated across a resistor due to its temperature. It is proportional to the absolute temperature of the resistor and is typically very small. Check FAQs

V t = [BoltZ] \cdot \frac{T}{[Charge-e]}

V_t - Thermal Voltage?T - Temperature?[BoltZ] - Boltzmann constant?[Charge-e] - Charge of electron?

Thermal Voltage Example

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Here is how the Thermal Voltage equation looks like with Values.

Here is how the Thermal Voltage equation looks like with Units.

Here is how the Thermal Voltage equation looks like.

0.025 = 1.4E-23 \cdot \frac{290}{1.6E-19}

0.025V = 1.4E-23J/K \cdot \frac{290K}{1.6E-19C}

0.025 = 1.4E-23 \cdot \frac{290}{1.6E-19}

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Thermal Voltage Solution

Follow our step by step solution on how to calculate Thermal Voltage?

FIRST Step Consider the formula

V t = [BoltZ] \cdot \frac{T}{[Charge-e]}

Next Step Substitute values of Variables

∴

V t = [BoltZ] \cdot \frac{290K}{[Charge-e]}

Next Step Substitute values of Constants

∴

V t = 1.4E-23J/K \cdot \frac{290K}{1.6E-19C}

Next Step Prepare to Evaluate

∴

V t = 1.4E-23 \cdot \frac{290}{1.6E-19}

Next Step Evaluate

∴

V t = 0.0249902579904081V

LAST Step Rounding Answer

∴

V t = 0.025V

Thermal Voltage Formula Elements

Variables

Constants

Thermal Voltage

Thermal Voltage is generated across a resistor due to its temperature. It is proportional to the absolute temperature of the resistor and is typically very small.

Symbol: V_t

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Thermal Voltage

Temperature

Temperature is the degree or intensity of heat present in a substance or object.

Symbol: T

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Temperature

Boltzmann constant

Boltzmann constant relates the average kinetic energy of particles in a gas with the temperature of the gas and is a fundamental constant in statistical mechanics and thermodynamics.

Symbol: [BoltZ]

Value: 1.38064852E-23 J/K

Charge of electron

Charge of electron is a fundamental physical constant, representing the electric charge carried by an electron, which is the elementary particle with a negative electric charge.

Symbol: [Charge-e]

Value: 1.60217662E-19 C

Other Formulas to find Thermal Voltage

Go Thermal Voltage using Einstein's Equation

V t = \frac{D n}{μ n}

Other formulas in Charge Carrier Characteristics category

Go Electrons Diffusion Constant

D n = μ n \cdot (\frac{[BoltZ] \cdot T}{[Charge-e]})

Go Hole Diffusion Length

L p = \sqrt{D p \cdot τ p}

Go Current Density due to Electrons

J n = [Charge-e] \cdot N e \cdot μ n \cdot E I

Go Current Density due to Holes

J p = [Charge-e] \cdot N p \cdot μ p \cdot E I

How to Evaluate Thermal Voltage?

Thermal Voltage evaluator uses Thermal Voltage = [BoltZ]*Temperature/[Charge-e] to evaluate the Thermal Voltage, Thermal voltage is the voltage produced within the P-N junction due to the action of temperature and is described as kT/q. Thermal Voltage is denoted by V_t symbol.

How to evaluate Thermal Voltage using this online evaluator? To use this online evaluator for Thermal Voltage, enter Temperature (T) and hit the calculate button.

FAQs on Thermal Voltage

What is the formula to find Thermal Voltage?

The formula of Thermal Voltage is expressed as Thermal Voltage = [BoltZ]*Temperature/[Charge-e]. Here is an example- 0.02499 = [BoltZ]*290/[Charge-e].

How to calculate Thermal Voltage?

With Temperature (T) we can find Thermal Voltage using the formula - Thermal Voltage = [BoltZ]*Temperature/[Charge-e]. This formula also uses Boltzmann constant, Charge of electron constant(s).

What are the other ways to Calculate Thermal Voltage?

Here are the different ways to Calculate Thermal Voltage-

Thermal Voltage=Electron Diffusion Constant/Mobility of Electron

Can the Thermal Voltage be negative?

No, the Thermal Voltage, measured in Electric Potential cannot be negative.

Which unit is used to measure Thermal Voltage?

Thermal Voltage is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Thermal Voltage can be measured.

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