Question

1. Read the introduction (paragraphs 1-4]. Which selection explains a problem with regular solar panels?
A) More and more people are using solar energy. The costs have gone down
almost 90 percent in the last 10 years. In many parts of the world, it is the cheapest
form of electricity
B) However, the solar power output can fall under gray skies. Scientists are
working to squeeze even more electricity from the panels.
C) Scientists demonstrated the new solar panel at Soochow University in China.
The panel has two new polymer layers on top of a regular solar panel cell.
D) The polymers are thin and are like plastic. They make electricity when
raindrops roll off of them. The electricity comes from the water rubbing against the
surface.​

Answer 1

The problem with regular solar panels is explained in option B. It mentions that solar power output can fall under gray skies. This means that when the weather is cloudy or overcast, regular solar panels may not be able to generate as much electricity. This can be a challenge because solar energy is dependent on sunlight to produce power. However, scientists are working on finding ways to improve the efficiency of solar panels so that they can generate more electricity even in less ideal weather conditions.