Question

What is called the best source of energy ?

Hint:

For exam questions asking about the characteristics of an ideal fuel or energy source, remember these keywords: high calorific value, low cost, easy availability, safe to use, and eco-friendly.

Answer 1

There is no single "best" source of energy, as the ideal choice depends on factors like geographical location, intended use, and economic conditions. However, a good or ideal source of energy is one that possesses most of the following characteristics:
\begin{enumerate} \item High Energy Output (Calorific Value): It should produce a large amount of useful energy per unit mass or volume.
\item Availability and Accessibility: It should be readily available in sufficient quantities and easy to obtain.
\item Economic Feasibility: It should be inexpensive to harness and use.
\item Safety and Convenience: It should be safe to handle, store, and transport without excessive risk.
\item Low Environmental Impact: It should cause minimal pollution and damage to the environment. It should be clean and sustainable.
\end{enumerate} In the modern context, sources like solar energy are often cited as one of the best sources because they are renewable, abundant, and have a very low environmental impact during operation, increasingly satisfying the criteria above.