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Stopping Potential Formula

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Stopping Potential is the minimum potential required to stop the emission of electrons from a metal surface when it is illuminated with light of a certain frequency. Check FAQs

V 0 = \frac{[hP] \cdot [c]}{[Charge-e]} \cdot (\frac{1}{λ}) - \frac{ϕ}{[Charge-e]}

V₀ - Stopping Potential?λ - Wavelength?ϕ - Work Function?[hP] - Planck constant?[c] - Light speed in vacuum?[Charge-e] - Charge of electron?[Charge-e] - Charge of electron?

Stopping Potential Example

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Here is how the Stopping Potential equation looks like with Values.

Here is how the Stopping Potential equation looks like with Units.

Here is how the Stopping Potential equation looks like.

3.6991 = \frac{6.6E-34 \cdot 3E+8}{1.6E-19} \cdot (\frac{1}{2.1}) - \frac{9.4E-17}{1.6E-19}

3.6991V = \frac{6.6E-34 \cdot 3E+8m/s}{1.6E-19C} \cdot (\frac{1}{2.1nm}) - \frac{9.4E-17J}{1.6E-19C}

3.6991 = \frac{6.6E-34 \cdot 3E+8}{1.6E-19} \cdot (\frac{1}{2.1}) - \frac{9.4E-17}{1.6E-19}

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Stopping Potential Solution

Follow our step by step solution on how to calculate Stopping Potential?

FIRST Step Consider the formula

V 0 = \frac{[hP] \cdot [c]}{[Charge-e]} \cdot (\frac{1}{λ}) - \frac{ϕ}{[Charge-e]}

Next Step Substitute values of Variables

∴

V 0 = \frac{[hP] \cdot [c]}{[Charge-e]} \cdot (\frac{1}{2.1nm}) - \frac{9.4E-17J}{[Charge-e]}

Next Step Substitute values of Constants

∴

V 0 = \frac{6.6E-34 \cdot 3E+8m/s}{1.6E-19C} \cdot (\frac{1}{2.1nm}) - \frac{9.4E-17J}{1.6E-19C}

Next Step Convert Units

∴

V 0 = \frac{6.6E-34 \cdot 3E+8m/s}{1.6E-19C} \cdot (\frac{1}{2.1E-9m}) - \frac{9.4E-17J}{1.6E-19C}

Next Step Prepare to Evaluate

∴

V 0 = \frac{6.6E-34 \cdot 3E+8}{1.6E-19} \cdot (\frac{1}{2.1E-9}) - \frac{9.4E-17}{1.6E-19}

Next Step Evaluate

∴

V 0 = 3.6990821517121V

LAST Step Rounding Answer

∴

V 0 = 3.6991V

Stopping Potential Formula Elements

Variables

Constants

Stopping Potential

Stopping Potential is the minimum potential required to stop the emission of electrons from a metal surface when it is illuminated with light of a certain frequency.

Symbol: V₀

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Stopping Potential

Wavelength

Wavelength is the distance between two consecutive peaks or troughs of a light wave, which is a measure of the length of a photon in a periodic wave pattern.

Symbol: λ

Measurement: WavelengthUnit: nm

Note: Value can be positive or negative.

Formulas to find Wavelength

Work Function

Work Function is the minimum energy required to remove an electron from a solid, typically a metal, to a point outside the solid, at a given temperature and pressure.

Symbol: ϕ

Measurement: EnergyUnit: J

Note: Value can be positive or negative.

Formulas to find Work Function

Planck constant

Planck constant is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.

Symbol: [hP]

Value: 6.626070040E-34

Light speed in vacuum

Light speed in vacuum is a fundamental physical constant representing the speed at which light propagates through a vacuum.

Symbol: [c]

Value: 299792458.0 m/s

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

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 in Photoelectric Effect category

Go Photon's Energy using Frequency

K max = [hP] \cdot v photon

Go Photon's Energy using Wavelength

E = \frac{[hP] \cdot [c]}{λ}

Go Photon's Momentum using Wavelength

p = \frac{[hP]}{λ}

Go Photon's Momentum using Energy

p = \frac{E}{[c]}

How to Evaluate Stopping Potential?

Stopping Potential evaluator uses Stopping Potential = ([hP]*[c])/([Charge-e])*(1/Wavelength)-Work Function/[Charge-e] to evaluate the Stopping Potential, Stopping Potential formula is defined as a measure of the minimum voltage required to stop the emission of electrons from a metal surface when it is illuminated with light of a certain frequency and is a fundamental concept in understanding the photoelectric effect. Stopping Potential is denoted by V₀ symbol.

How to evaluate Stopping Potential using this online evaluator? To use this online evaluator for Stopping Potential, enter Wavelength (λ) & Work Function (ϕ) and hit the calculate button.

FAQs on Stopping Potential

What is the formula to find Stopping Potential?

The formula of Stopping Potential is expressed as Stopping Potential = ([hP]*[c])/([Charge-e])*(1/Wavelength)-Work Function/[Charge-e]. Here is an example- 3.699082 = ([hP]*[c])/([Charge-e])*(1/2.1E-09)-9.4E-17/[Charge-e].

How to calculate Stopping Potential?

With Wavelength (λ) & Work Function (ϕ) we can find Stopping Potential using the formula - Stopping Potential = ([hP]*[c])/([Charge-e])*(1/Wavelength)-Work Function/[Charge-e]. This formula also uses Planck constant, Light speed in vacuum, Charge of electron, Charge of electron constant(s).

Can the Stopping Potential be negative?

Yes, the Stopping Potential, measured in Electric Potential can be negative.

Which unit is used to measure Stopping Potential?

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

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Stopping Potential Formula

Stopping Potential Example

Stopping Potential Solution

Stopping Potential Formula Elements

Other formulas in Photoelectric Effect category

How to Evaluate Stopping Potential?

FAQs on Stopping Potential

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