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State the advantage and disadvantage of using solar cells.
Advantages of using solar cells are:
●Electricity produced by solar cells is clean and silent.
●Photovoltaic systems are quiet and visually unobtrusive.
●Small-scale solar plants can take advantage of unused space on rooftops of existing buildings.
●Solar energy is a locally available renewable resource.
Disadvantage of using solar cells are:
●Some toxic chemicals, like cadmium and arsenic, are used in the PV production process.
●Solar energy is somewhat more expensive to produce.
●Solar power is a variable energy source, with energy production dependent on the sun.