Question

Name the energy transfers which occurs when :An electric bell rings A torch is on Some ines speaks in micro phone Picture on T.V screen

Answer 1

a.electric energy is changed to mechanical energy and then sound energy 
b.chemical energy is changed to electrical then light and heat
c.sound energy is changed  to electric energy
d.electric energy is changed  to light and heat

Answer 2

An electric bell rings:-

Electric energy => sound energy

A torch is on:-

Chemical energy => electrical energy + light energy

Someone speaks in microphone:-

Electrical energy => sound energy

Picture on T.V. screen:-

Electrical energy => light energy + sound energy