Solar Panels: Generating Electricity From Photovoltaic Cells (VCE SSCE Physics): Flashcards

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Solar Panels: Generating Electricity From Photovoltaic Cells
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Function of photovoltaic cells

Convert sunlight into electrical energy

Efficiency of modern solar panels when new

Approximately 25%

P-type semiconductor characteristic

Has a lack of electrons (contains 'holes')

N-type semiconductor characteristic

Has excess electrons

PN junction definition

Boundary between p-type and n-type semiconductor materials

Voltage & current in series connection

Voltage adds up, current stays the same

Voltage & current in parallel connection

Voltage stays same, current adds up

Key difference between DC and AC

DC polarity constant; AC polarity changes regularly

Inverter function in solar systems

Converts DC into AC using electronic circuit

Power formula using current and voltage

P=IVP = IV

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