What are solar cells ? Explain the structure of solar panel. List two principal advantages associates with solar cells.

Explanation

A device that converts solar energy directly into electrical energy. A large no. of solar cells are combined in an arrangement called solar cell panel. Principal Advantages :
(i) They have no moving parts.
(ii) Require little maintenance & work quite satisfactorily without the use of any focusing device.
(iii) These cells can be set up in remote & inaccessible areas where laying of a power transmission may be expensive.
Detailed Answer:
Solar cells are the devices that convert solar energy of sun into electricity. Solar panel consists of a large number of solar cells connected by silver wires. They are made up of special grade silicon. These are mounted on specially designed inclined roof tops so that more solar energy is incident over it.
Advantages of solar cells are :
(a) They have no moving parts, require little maintenance and work quite satisfactorily without the use of any focusing device.
(b) They can be set up in remote and inaccessible hamlets or very sparsely inhabited areas.