Advertisements
Advertisements
Question
Which of the two is more energy efficient: filament type electric bulb or CFL? Why?
Solution
A compact fluorescent lamp (CFL) is more energy efficient, because it consumes much less electrical energy than a filament-type electric bulb.
APPEARS IN
RELATED QUESTIONS
Why are we looking at alternate sources of energy?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Why is LPG considered a good fuel?
The ultimate source of energy stored in fossil fuels is:
(a) moon
(b) earth
(c) sun
(d) sea
Name the original source of wind energy.
What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
Name the major component of biogas.
The major component of biogas is:
(a) hydrogen
(b) butane
(c) hydrogen sulphide
(d) methane
Fill in the blank
Solar cells use the power supplied by the ______.
State the main difference between the renewable and non-renewable sources of energy.
