A solar panel measures 70 cm × 54 cm.In direct sunlight,the panel delivers 3.1 A at 12 V.If the intensity of sunlight is 1,000 W/m²,what is the efficiency of the solar panel in converting solar energy into electrical energy?

Question

Quizplus · Accepted Answer

Area of the solar panel = 0.7 m × 0.54 m = 0.378 m²

Power output of the solar panel = 3.1 A × 12 V = 37.2 W

Intensity of sunlight in W/m² = 1000 W/m²

The incident power on the solar panel = 1000 W/m² × 0.378 m² = 378 W

Efficiency of the solar panel = (Power output / Incident power) × 100%

= (37.2 W / 378 W) × 100%

= 9.84 ≈ 10%

Therefore, the answer is choice C, which is 10%.

A Solar Panel Measures 70 Cm × 54 Cm