A solar panel measures 80 cm × 50 cm.In direct sunlight,the panel delivers 4.8 A at 15 V.If the intensity of sunlight is 1000 W/m²,what is the efficiency of the solar panel in converting solar energy into electrical energy?

Question

Quizplus · Accepted Answer

First, we need to calculate the area of the solar panel:

Area = length x width = 0.8m x 0.5m = 0.4m²

Next, we need to determine the power output of the solar panel:

Power = current x voltage = 4.8A x 15V = 72W

Now, we can calculate the solar irradiance on the panel:

Solar irradiance = (power output) / (panel area) = 72W / 0.4m² = 180 W/m²

Finally, we can calculate the efficiency:

Efficiency = (power output) / (solar irradiance x panel area) x 100%

Efficiency = (72W) / (1000W/m² x 0.4m²) x 100% = 18%

Therefore, the efficiency of the solar panel in converting solar energy into electrical energy is 18%, which corresponds to choice C.

A Solar Panel Measures 80 Cm × 50 Cm