W610.11 1 Selling electricity, part 2At the radius of the earth's orbit, the intensity of sunlight is I = 1.4 kW.m 2. (This means that 1.4 kW.m ? passes through 1 square metre at right angles to the sun'srays.) The solar array in the previous question consists of 10 panels, each with area A= 1.6 m2 . Under optimal conditions - with the sun at right angles to the array andno clouds in the sky - the array produces Pmt = 2.3 kW .What is the efficiency of the array? Power out/power in = %. 10.Selling electricity, part 12.01.61.20.80.4810 121416time/hrThe image above is a neat copy of a photo of an electricity meter for a domestic solar array. The display shows the energy we sold to the electricity company on a winter'sday. Between 7 a.m. and 5 p.m., how many kilowatt hours did this household sell to the electricity company? E = kW.hrs. Give your answer to two significantfigures.Each box is 100 W high and 1 hr wide.power/kW

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1 Selling electricity, part 2 At the radius of the earth's orbit, the intensity of sunlight is I = 1.4 kW.m2. (This means that 1.4 kW.m passes through 1 square metre at right angles to the sun's rays.) The solar array in the previous question consists of 10 panels, each with area A = 1.6 m2 . Under optimal conditions - with the sun at right angles to the array and no clouds in the sky - the array produces Pout 2.3 kW. What is the efficiency of the array? Power out/power in = %.

1 Selling electricity, part 2 At the radius of the earth's orbit, the intensity of sunlight is I = 1.4 kW.m2. (This means that 1.4 kW.m passes through 1 square metre at right angles to the sun's rays.) The solar array in the previous question consists of 10 panels, each with area A = 1.6 m2 . Under optimal conditions - with the sun at right angles to the array and no clouds in the sky - the array produces Pout 2.3 kW. What is the efficiency of the array? Power out/power in = %.