Question: On an overcast day, the average electric field strength of the sunlight hitting your roof is 300 N/C.
Part A: How much electrical power can you get from an optimally aligned photovoltaic array (sunlight coming in perpendicularly) with an area of 4.5 m2 and an efficiency of 14 percent?
(in W)
Having trouble with this physics question, can you please explain with the answer.