electrical -> mechanical -> light chemical -> mechanical -> light chemical -> electrical -> light nuclear -> electrical -> light
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following energy conversions takes place in a battery-operated flashlight?
Possibilities:
- electrical -> mechanical -> light
- chemical -> mechanical -> light
- chemical -> electrical -> light
- nuclear -> electrical -> light

chemical -> electrical -> light