Which energy causes us to perspire during summer days?

We use headphones when we talking to someone in a cellphone. What are the forms of energy present in headphones?

Solar panels or solar cells do not make use of costly fuel and make no noise or pollution. Which energy does it get from the sun?

As solar panels get enough energy from the sun, which does it produce?

What form of energy are produced when a phone rings?

You are listening to your favorite music in your cellphone. Which form of energy is present?

Which among objects uses electrical and light energy to work?

Sun is the main source of energy on Earth. The energy transfers in space through radiation. What are the forms of energy present?

Which form of energy travels through empty space and in all directions?

Our body is considered as a heat engine. Which situation uses heat energy in our body?