How is the energy useful to us? Explain.

We need energy in almost every field of our life. Without energy our life is impossible.

Some of the uses of energy are:

• We need energy of fuels to generate electricity and to run vehicles.
• We need energy to run our electrical appliances like refrigerator, TV, radio, computer, etc.
• We need energy at construction sites to construct houses, buildings, etc.
• We need energy to cook our food and other domestic use.
• We need energy (petrochemicals) for manufacturing fibres, plastics, paints, cosmetics, etc.

· All the factories, industries, agricultural devices depend on power supply to run the machines.