heat energy only. heat and light energy. light and motion energy. light energy only.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: When electric current flows through the metal filament of a light bulb, electrical energy is converted to
Possibilities:
- heat energy only.
- heat and light energy.
- light and motion energy.
- light energy only.

heat and light energy.