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A rooftop solar panel measures 50cm × 150cm. The solar constant S = 1.37 9kW/m^2 , meaning that 1.37kJ of energy strikes every square meter of the Earth every second. Solar panels have a relatively low efficiency: e = 0.20, meaning that only 20% of the solar energy striking the cell can be converted to electrical energy. The solar array shown on the right consists of 25 panels, and the system operates at V = 20V.
a. Calculate the power of a single solar panel, P. The net power will be P = ePi where Pi is the energy/second incident on the panel. A) P = 206W B) P = 365W C) P = 1028W D) P = 1827W E) P = 5140W F) P = 9135W
b. What is the power Ptotal of the entire array of solar panels? A) Ptotal = 5.14kW B) Ptotal = 9.13kW C) Ptotal = 27.7kW D) Ptotal = 45.7kW E) Ptotal = 128kW F)Ptotal = 228kW
c. What is the resistance R of a single panel? Write your formula! Express your final numeric answer using the format R = ?value?. Include units!
d.How much current I flows through a single panel? Write your formula! Express your final numeric answer using the format I = ?value?. Include units!
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