Question

Name the energy transfers which occur when:
(i) an electric bell rings
(ii) someone speaks into a microphone
(iii) there is a picture on a television screen
​(iv) a torch is on

Answer 1

(a) When an electric bell rings, the electrical energy gets converted into sound energy.

(b) When someone speaks into a microphone then sound energy gets converted into electrical energy.

(c) When there is a picture on television the electrical energy gets converted into light energy.

(d) When a torch is on, the chemical energy of the cell of the torch gets converted into light energy.