(a)What are solar cells?
(b) How much voltage can be developed and how much electricity canbe produced by one typical solar cell when exposed to the Sun ?
(c)The future of power generation by solar energy is bright in India. ,
Give reason.
(d) List two advantages of solar cells.
Answers
Answer:
Solar cells are;
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
Voltage can be developed in ;
The common single junction silicon solar cell can produce a maximum open-circuit voltage of approximately 0.5 to 0.6 volts. Solar cells are described as being photovoltaic, irrespective of whether the source is sunlight or an artificial light.
Give reason;
Solar energy is an inexhaustible source of energy produced from sunlight. It has bright future in India because (a) Many parts (regions) of the country received sunlight on 300 days annually and so it becomes possible to generate 20 MW solar energy per square kilometer in such areas.
Give 2 advantages;
i) Solar power is pollution free and causes no greenhouse gases to be emitted after installation.
ii) Reduced dependence on foreign oil and fossil fuels.
Answer:
a) a solar cell or photovoltaic cell is an electrical device that convert the energy of light directly into electricity by the photovoltaic effect which is a physical and chemical phenomenon
c) solar energy is an inexhaustible source of energy produced from sunlight it has bright future in india because many parts of the country received sunlight on 300 days annually and so it becomes possible to generate 20 MV solar energy per sq km in such areas
I hope it help you.....