Question

What is a solar panel? Write its main three uses.

Answer 1

Hint: We know that solar energy is a sustainable, eco-friendly energy. It converts light energy from the sun to electrical energy. And solar panels are the most important part of production of solar energy. It is used in industrial and households extensively.

Complete step-by-step answer:
We know that the sun is the natural form of energy. It radiates heat energy in the form of light radiations. Solar energy is a natural form of energy. The solar-panels are the photo-voltaic cells. These are sensitive to light. These cells can capture the light coming from the sun. Then they emit electrons, which move in the cell to provide electric current. This reduces the electricity bills and is very cost effective. Though the initial setup and maintenance is costly, they provide current for long durations.
 The most common use of the solar energy are:
1. The solar heaters, where rooftop solar is used.
2. Provide electricity in remote regions.
3. Used to charge batteries which can act as backups for a short duration of time.
4. This is the main source energy in space exploration, where the satellites use the solar energy for transmitting information.
5. The energy is also used to dig oil wells, as the process is tiresome and needs a lot of manpower.
6. It is also used in wireless communications.
7. It is used in most institutes in order to conserve electrical energy.

Note: Since the solar panels absorb heat energy, they are very hot always and must not be touched. Also, solar panels must be set up in regions where it is mostly sunny, like regions near the equators. This energy is only available during the day time.