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Minimum Energy required by Electron to Leave Cathode Formula

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Net energy refers to the amount of usable energy obtained from a particular energy source after deducting the energy required to extract, process, and deliver that energy. Check FAQs

Q = J c \cdot V c

Q - Net Energy?J_c - Cathode Current Density?V_c - Cathode Voltage?

Minimum Energy required by Electron to Leave Cathode Example

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Here is how the Minimum Energy required by Electron to Leave Cathode equation looks like with Values.

Here is how the Minimum Energy required by Electron to Leave Cathode equation looks like with Units.

Here is how the Minimum Energy required by Electron to Leave Cathode equation looks like.

0.5875 = 0.47 \cdot 1.25

0.5875W/cm² = 0.47A/cm² \cdot 1.25V

0.5875 = 0.47 \cdot 1.25

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Minimum Energy required by Electron to Leave Cathode Solution

Follow our step by step solution on how to calculate Minimum Energy required by Electron to Leave Cathode?

FIRST Step Consider the formula

Q = J c \cdot V c

Next Step Substitute values of Variables

∴

Q = 0.47A/cm² \cdot 1.25V

Next Step Convert Units

∴

Q = 4700A/m² \cdot 1.25V

Next Step Prepare to Evaluate

∴

Q = 4700 \cdot 1.25

Next Step Evaluate

∴

Q = 5875W/m²

LAST Step Convert to Output's Unit

∴

Q = 0.5875W/cm²

Minimum Energy required by Electron to Leave Cathode Formula Elements

Variables

Net Energy

Net energy refers to the amount of usable energy obtained from a particular energy source after deducting the energy required to extract, process, and deliver that energy.

Symbol: Q

Measurement: IntensityUnit: W/cm²

Note: Value should be greater than 0.

Formulas to find Net Energy

Cathode Current Density

Cathode Current Density is a measure of the flow of electric charge through a given area of a conductor from Cathode.

Symbol: J_c

Measurement: Surface Current DensityUnit: A/cm²

Note: Value should be greater than 0.

Formulas to find Cathode Current Density

Cathode Voltage

Cathode Voltage is the cathode potential. Cathode voltage refers to the electrical potential difference or voltage at the cathode of an electrochemical cell or device.

Symbol: V_c

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Cathode Voltage

Other formulas in Thermal Power Plant category

Go Maximum Electron Current per Unit Area

J = A \cdot T^{2} \cdot \exp (- \frac{Φ}{[BoltZ] \cdot T})

Go Current Density from Cathode to Anode

J c = A \cdot {T c}^{2} \cdot \exp (- \frac{[Charge-e] \cdot V c}{[BoltZ] \cdot T c})

Go Output Voltage given Anode and Cathode Voltages

V out = V c - V a

Go Output Voltage given Anode and Cathode Work Functions

V out = Φ c - Φ a

How to Evaluate Minimum Energy required by Electron to Leave Cathode?

Minimum Energy required by Electron to Leave Cathode evaluator uses Net Energy = Cathode Current Density*Cathode Voltage to evaluate the Net Energy, The Minimum Energy required by Electron to Leave Cathode formula is defined as the energy required to leave the cathode. Net Energy is denoted by Q symbol.

How to evaluate Minimum Energy required by Electron to Leave Cathode using this online evaluator? To use this online evaluator for Minimum Energy required by Electron to Leave Cathode, enter Cathode Current Density (J_c) & Cathode Voltage (V_c) and hit the calculate button.

FAQs on Minimum Energy required by Electron to Leave Cathode

What is the formula to find Minimum Energy required by Electron to Leave Cathode?

The formula of Minimum Energy required by Electron to Leave Cathode is expressed as Net Energy = Cathode Current Density*Cathode Voltage. Here is an example- 5.9E-5 = 4700*1.25.

How to calculate Minimum Energy required by Electron to Leave Cathode?

With Cathode Current Density (J_c) & Cathode Voltage (V_c) we can find Minimum Energy required by Electron to Leave Cathode using the formula - Net Energy = Cathode Current Density*Cathode Voltage.

Can the Minimum Energy required by Electron to Leave Cathode be negative?

No, the Minimum Energy required by Electron to Leave Cathode, measured in Intensity cannot be negative.

Which unit is used to measure Minimum Energy required by Electron to Leave Cathode?

Minimum Energy required by Electron to Leave Cathode is usually measured using the Watt per Square Centimeter[W/cm²] for Intensity. Watt per Square Meter[W/cm²], Watt per Square Millimeter[W/cm²], Kilowatt per Square Meter[W/cm²] are the few other units in which Minimum Energy required by Electron to Leave Cathode can be measured.

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Minimum Energy required by Electron to Leave Cathode Formula

Minimum Energy required by Electron to Leave Cathode Example

Minimum Energy required by Electron to Leave Cathode Solution

Minimum Energy required by Electron to Leave Cathode Formula Elements

Other formulas in Thermal Power Plant category

How to Evaluate Minimum Energy required by Electron to Leave Cathode?

FAQs on Minimum Energy required by Electron to Leave Cathode

Variable Name