a solar panel is exposed to 55 W of sunlight and produces 2,640 J of electrical energy in 1 minute. What is the efficiency of this panel?

1 answer

To find the efficiency of the panel, we need to use the formula:

Efficiency = (Electrical Energy Output / Solar Energy Input) * 100

Given that the solar panel received 55 W of sunlight for 1 minute, the solar energy input can be calculated as follows:

Solar Energy Input = Power * Time = 55 W * 60 s = 3300 J

Substituting the values into the formula:

Efficiency = (2640 J / 3300 J) * 100 = 80%

Therefore, the efficiency of this solar panel is 80%.