I have done an experiment with solar panels over the course of the day to determine the total power output in Wh. I measured voltage and current through my solar panel circuit using a multimeter every half an hour. I multiplied these together to find the power being generated each half hour of the day. Assuming the power rises and falls linearly between each measurement, I determined the energy for each half hour is equal to 30 times the power at the mid-mark (either 15 or 45 minutes into the hour). Now, to determine the total energy in Wh the panel produced during the day, do I multiply the result of the previous operation by 0.5 hrs and then add all the interval's power together or can I just add them all together without multiplying by 0.5 hrs?
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