Advertisements
Advertisements
Question
What are the advantages and disadvantages of using solar cells for producing electricity?
Advertisements
Solution
Advantages of Solar Cells:
(i) Solar cells have no moving parts, easy to construct, require little maintenance.
(ii) Solar cells derive their energy from solar radiation which is a renewable source of energy and also inexhaustible.
(iii) They are most suitable for the remote inaccessible and isolated places where laying a power transmission line may be expensive and not commercially viable.
(iv) They are environmentally friendly as they do not cause any pollution.
(v) Use of solar cells enables us to save the usage of fossil fuels as solar cells require no fuel.
Disadvantages of Solar Cells:
(i) The manufacturing cost of solar cells is sufficiently expensive.
(ii) The efficiency of energy conversion of solar energy to electricity is low.
(iii) The electricity produced in solar cells is direct current (DC) which cannot be directly used for many household appliances.
APPEARS IN
RELATED QUESTIONS
What is meant by a translational motion? Give one example.
Explain the difference between a uniform linear motion and a uniform circular motion.
What is the SI unit of work?
Name the CGS unit of work.
State the energy changes which take place when A toy car with a wound spring moves on ground.
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Mention whether work is done or not in the following activity.
| S. No | Activity | Work done or not done |
| 1. | Pushing the door | |
| 2. | Holding a doll | |
| 3. | Sitting in a bus | |
| 4. | Pushing a wall | |
| 5. | Digging soil |
A force can cause an object to change its ______.
A force of F = (5y + 20) `hat"j"` N acts on a particle. The work done by this force when the particle is moved from y = 0 m to y = 10 m is ______ J.
Work done by this force at any instant is ______.
