When we speak in front of a microphone the electric energy changes into sound energy.

The electric energy changes into mechanical energy in

When we speak in front of a microphone, the sound energy changes into___________ energy.

In which of the following, the electric energy changes into mechanical energy ?

In charging a car battery, the chemical energy changes into electric energy.

An electric bulb converts electric energy into heat energy.

Electric motor converts electric energy into ………….. Energy.

When electric current flows through a bulb, the electric enery first changes into light energy and then heat energy.

Name the devices or machines which convert : (i) Electrical energy into sound energy. (ii) Heat energy into kinetic energy (or mechanical energy). (iii) Chemical energy into kinetic energy (or mechnical energy). (iv) Chemical energy into heat energy. (v) Light energy into heat energy.