Question

3.Name the energy transfers when :

a)an electric bell rings.

b) someone speaks into a microphone.

c) there is a picture on a television screen

d) a torch is on.

e) radio

Answer 1

a) electrical energy ---.> sound energy

b)electrical energy ---> sound energy

c)electrical energy --->light energy + sound energy

d) chemical energy ------>electrical energy + light energy.

e) electrical energy ----> sound enrgy

Answer 2

(A) electric energy to mechanical energy and then sound energy 
 (b) sound energy to electric energy 
 (c) electric energy to light and heat
(d) chemical energy to electrical then light and heat
(e) electromagnetic waves to electric then converted into sound
 
  hope it will help :)