Lamp Efficiency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Lamp Efficiency = Luminous Flux/Input Power
η = F/Pin
This formula uses 3 Variables
Variables Used
Lamp Efficiency - (Measured in Lumen Per Watt) - Lamp efficiency refers to the effectiveness of a lamp or light source in converting electrical energy into visible light. It quantifies the ratio of light output (lumens) to electrical power input.
Luminous Flux - (Measured in Lumen) - Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source.
Input Power - (Measured in Watt) - Input power refers to the amount of electrical power consumed by a device or system. It represents the energy input required to operate the equipment and is typically measured in watts or kilowatts.
STEP 1: Convert Input(s) to Base Unit
Luminous Flux: 42 Lumen --> 42 Lumen No Conversion Required
Input Power: 290 Watt --> 290 Watt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
η = F/Pin --> 42/290
Evaluating ... ...
η = 0.144827586206897
STEP 3: Convert Result to Output's Unit
0.144827586206897 Lumen Per Watt --> No Conversion Required
FINAL ANSWER
0.144827586206897 0.144828 Lumen Per Watt <-- Lamp Efficiency
(Calculation completed in 00.004 seconds)

Credits

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Created by Prahalad Singh
Jaipur Engineering College and Research Centre (JECRC), Jaipur
Prahalad Singh has created this Calculator and 100+ more calculators!
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Verified by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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Illumination Parameters Calculators

Number of Lamps Required for Illumination
​ LaTeX ​ Go Number of Lamp = (Illumination Intensity*Area of Illumination)/(Luminous Flux*Utilization Factor*Maintenance Factor)
Reduction Factor
​ LaTeX ​ Go Reduction Factor = Mean Spherical Candle Power/Mean Horizontal Candle Power
Solid Angle
​ LaTeX ​ Go Solid Angle = Area of Illumination/(Radius of Illumination^2)
Mean Spherical Candle Power
​ LaTeX ​ Go Mean Spherical Candle Power = Luminous Flux/(4*pi)

Lamp Efficiency Formula

​LaTeX ​Go
Lamp Efficiency = Luminous Flux/Input Power
η = F/Pin

Why is Lamp Efficiency high in fluorescent tube lights?

The lamp efficiency in fluorescent tube light is high because the invisible radiation is converted into visible radiation with the action of phosphor coating inside the tube which reduces the loss light energy.

How to Calculate Lamp Efficiency?

Lamp Efficiency calculator uses Lamp Efficiency = Luminous Flux/Input Power to calculate the Lamp Efficiency, The Lamp Efficiency formula is defined as the ratio between the luminous flux and the power input. It is measured in lumens per watt. Lamp Efficiency is denoted by η symbol.

How to calculate Lamp Efficiency using this online calculator? To use this online calculator for Lamp Efficiency, enter Luminous Flux (F) & Input Power (Pin) and hit the calculate button. Here is how the Lamp Efficiency calculation can be explained with given input values -> 0.144828 = 42/290.

FAQ

What is Lamp Efficiency?
The Lamp Efficiency formula is defined as the ratio between the luminous flux and the power input. It is measured in lumens per watt and is represented as η = F/Pin or Lamp Efficiency = Luminous Flux/Input Power. Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source & Input power refers to the amount of electrical power consumed by a device or system. It represents the energy input required to operate the equipment and is typically measured in watts or kilowatts.
How to calculate Lamp Efficiency?
The Lamp Efficiency formula is defined as the ratio between the luminous flux and the power input. It is measured in lumens per watt is calculated using Lamp Efficiency = Luminous Flux/Input Power. To calculate Lamp Efficiency, you need Luminous Flux (F) & Input Power (Pin). With our tool, you need to enter the respective value for Luminous Flux & Input Power and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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