Question

Explain the procedure of clock needle rotating from the energy of electric cell!
To the most satisfactory answer,i'll mark brainliest!

Answer 1

Answer:

Have you ever been in one of those restrooms where the faucets come on automatically when you wave your hands underneath them? Or walked through an electric door that opened just as you approached? Maybe your home is fitted with invisible "magic-eye" beams that "trip up" intruders by sounding an alarm? Or perhaps you've got a calculator that makes power with a little built-in solar panel? All these things are examples of photoelectric cells (sometimes called photocells)—electronic devices that generate electricity when light falls on them. What are they and how do they work? Let's take a closer look!