electrical energy to light and heat energy light energy to electrical and mechanical energy heat energy to electrical and light energy electrical energy to mechanical and heat energy
I gave my students this multiple choice question: What energy transformation occurs when an electric lamp is turned on?

Only one answer is correct among these 4 choices:
- electrical energy to light and heat energy
- light energy to electrical and mechanical energy
- heat energy to electrical and light energy
- electrical energy to mechanical and heat energy

Could you tell me which one is correct?

electrical energy to light and heat energy