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प्रश्न
Observe the connections of cells shown in the following images.
i. Which connection will give maximum potential difference?
ii. Give one advantage and one disadvantage of this energy.
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उत्तर
i.Type of connection of solar cells in ‘A’ is ‘in series’ connection and it will give maximum potential difference.
ii.Advantage: Solar energy is an eco-friendly source of energy. It does not cause any pollution.
Disadvantage: As it can be produced in presence of sunlight only, it needs to be stored in batteries for use.
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संबंधित प्रश्न
A solar water heater cannot be used to get hot water on
Name the device which converts sunlight into electricity.
Fill in the following blank with suitable word:
A solar cell converts ................ energy into ................ energy.
Explain why, a plane mirror reflector is used in a box-type solar cooker.
Name the semi-conductor material which is usually used for making solar cells.
What is solar constant? What is the value of solar constant?
Why is the solar cooker box painted black from inside?
Solar cells are made of:
(a) conductors
(b) insulators
(c) semi-conductors
(d) super-conductors
The value of solar constant is:
(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3
A solar cooker may not cook food if
(a) the solar cooker is not placed in the shade
(b) the glass sheet cover of solar cooker is not closed
(c) a convex mirror reflector is not used
In many applications, solar cells are connected to rechargeable batteries. Why is this so?
What differences would you expect in the charging of car batteries (i) in bright sunlight (ii) on a cloudy day (iii) at night?
What steps would you suggest to reduce energy consumption?
Make a table based on forms of energy and corresponding devices:
| Forms of Energy | Devices | |
| a. | Electric | _________ |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | __________ |
| d. | _________ | Solar cooker, Solar heater |
Distinguish between the following.
Electricity generation from solar cells and solar thermal power generation
______ is considered as a great source of energy.
Write a note on Kamuthi Solar Project.
How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitations overcome?
Observe the figure and label it properly:
- What is the figure related to?
- Why are reflectors used?
- Draw a flow chart showing different stages in such a process.
- How is the process used to generate electricity?
- What other method can be used to generate electricity using the same energy source?
