Question

write about energy transformation in cell and torch

Answer 1

chemical energy to electrical energy to light energy

Answer 2

When you press the button on an electric torch or flashlight, the first energy conversion comes from the battery itself. Batteries use metal electrodes set into a chemical paste to store electricity; as the electrode oxidizes it releases electrons. In some batteries, this process is one-way. Once the battery runs down, it's useless. You can use rechargeable batteries. It's possible to add electricity into them in a process that's highly energy efficient, making them an environmentally friendly alternative to disposable alkalines.