Question

How does a flashlight demonstrate the law of conservation of energy?

Answer 1

No energy is created or destroyed as it changes form. In other words, energyis conserved in a system. For example, the amount of heat and light energygiven off by the flashlight equals the amount of chemical energy released by the battery. The Law of Conservation of Energy describes this principle.

Answer 2

Answer:

The Law of Conservation of Energy states that “energy cannot be created nor destroyed, but it can be transformed from one form to another.” ... In a flashlight, the electrical energy becomes light energy and thermal energy in the bulb.