Science

  1. Practice
  2. Science
  3. Calculate the Cost of Electricity Consumption (1)
Science
Question
Calculate the Cost of Electricity Consumption (1)
0
Not quite remember
0
I easily remember
0
%
Definition of energy efficiency
Energy efficiency is the percentage of energy input converted to useful form of energy output
Energy efficiency formula
Example of lightning device (1)
Filament lamp
Example of lightning device (2)
Energy saving lamp (compact fluorescent lamp, CFL)
Example of lightning device (3)
LED lamp
Energy efficiency of filament lamp
Maximum electrical energy converted to light energy ≈ 10%
Energy efficiency of energy saving lamp (compact fluorescent lamp, CFL)
Maximum electrical energy converted to light energy ≈ 50%
Energy efficiency of LED lamp
Maximum electrical energy converted to light energy ≈ 90%
The efficiency of filament bulb
The filament bulb lasts approximately 1 000 hour
The efficiency of energy saving lamp (compact fluorescent lamp, CFL)
Lasts approximately 8 000 hours
The views expressed in the flashcard here are those of the contributor and don’t necessarily represent the views of pandai
Not quite remember
I easily remember
Show answer
Previous
Show answer
Show question
Next
Report this flashcard
Calculate the Cost of Electricity Consumption (1)
Practice Flashcard Now
You’ve practice this deck
View answer
Return to the Science flashcard list

Quiz
Videos
Notes
Account