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Firstly it can be utilised only during daytime. Secondly the availiability of special grade silicon for making solar cells is limited. Also the silver for interconnecting the cells in the panel increases the cost. We also need a battery to collect the generated electricity.
solar cells
No, solar energy and solar cells are not the same, although sometimes people do use the phrases as though they were interchangable. Solar energy is energy that is transferred from the sun to the earth. Solar cells are devices that turn energy from the sun into photovoltaic energy that we can use.
They aren't needed, most calculators use batteries not solar cells.
They all use solar energy
solar means the sun and we use solar cells to convert into energy which gives you electricity.
Electricity generated by the sun with the use of Solar Panels. They use Solar cells to convert sun light into electric energy
solar powered cars
they are used for generating electricity
Some governments use solar energy to power offices. Communication and military satellites are powered by solar cells.
photovoltaic
Use the wind, a windmil. Use the water, a water turbine. And use the sun, solar cells (a solar panel)