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What are solar cells? What are they made up of? How are they useful?

Solar cell is the cell that generate electricity using the solar energy. They are made up of semiconductors like silicon or GaAs. 

Solar power is pollution-free during use. Solar cells lasts for longer time once they are made. The material with which it is made up of i.e. silicon is present in abundance.

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Solar panel is made up of large number of cells put together with the help of connecting wires in a definite pattern.

Solar panel is basically used to generate electricity using the solar energy. It produces more electrical power than one solar cell. It can be used to run electrical appliances, fans and lights or bulbs. solar panels are also used to collect energy in the day to light the street lights on the road at night.

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