Q. 185.0( 1 Vote )

Why is it not possible to make use of solar cells to meet all our energy needs? State at least three reasons to support your answer.

Answer :

We cannot make use of solar cells to meet all our energy needs since:

(a) Solar cells have very low efficiency. At present, the best designed solar cells can generate 240 Wm-1 in bright sunlight with a maximum efficiency of 25%. So, they can convert 25 percent of the light falling on them into electricity.


(b) Solar cells are very expensive. The special grade silicon needed for making solar cells is expensive. The silver wires used to interconnect the solar cells is also very expensive. So, the extensive use of solar cells in generating power is limited due to their high cost.


(c) Solar cells can only be used during daylight. During night or during cloudy days, the solar cells are unable to produce electricity.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Lakhmir Singh | Source of Energy (Part-1)Lakhmir Singh | Source of Energy (Part-1)Lakhmir Singh | Source of Energy (Part-1)39 mins
Know More About the EnergyKnow More About the EnergyKnow More About the Energy43 mins
Know More about the EnergyKnow More about the EnergyKnow More about the Energy41 mins
Know More About Energy (Part-2)Know More About Energy (Part-2)Know More About Energy (Part-2)40 mins
Fundamentals of Heat EnergyFundamentals of Heat EnergyFundamentals of Heat Energy47 mins
Overview of Nuclear EnergyOverview of Nuclear EnergyOverview of Nuclear Energy47 mins
Different Types of Potential EnergyDifferent Types of Potential EnergyDifferent Types of Potential Energy33 mins
Electric EnergyElectric EnergyElectric Energy47 mins
Electric Potential EnergyElectric Potential EnergyElectric Potential Energy48 mins
Strong Your Concept of Electric EnergyStrong Your Concept of Electric EnergyStrong Your Concept of Electric EnergyFREE Class
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses