Can solar energy be used to light up LED circuits?
What are the requirements of a
circuit to conduct electricity?
An
electrical current requires a closed circuit. The circuit allows a direct,
uninterrupted flow of electrons from the power source and back - a complete
circular connection with no beginning or end.
What is the difference between renewable and
non-renewable energy?
Renewable energy uses energy sources that are not
"used up". For example, solar power from the sun is renewable.
In addition, renewable energy sources such as
solar and wind don't emit carbon dioxide and other greenhouse
gases that contribute to global warming
Examples
of non-renewable energy sources include fossil fuels like coal and
oil. Once we use or burn these resources, they are gone forever. They are also
cause huge environmental pollution and increased global warming.
Why are LED bulbs describes are being energy
efficient?
Light emitting diodes are a newer
design for lighting. They create a lot of light with very little electricity.
They're very energy efficient. And unlike CFLs, they don't have mercury. That
means they're better for the environment. They don't need to be specially
recycled. The only problem is that LEDs are much more expensive than other
bulbs.
Comments
Post a Comment