Question

explain energy transformation in LED , dry cell and ceiling fan....

Answer 1

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LED converts heat into light. A light-emitting diode (LED) that emits more light energy than it consumes in electrical energy has been unveiled by researchers in the US.


A battery contains electrochemical cells that can store chemical energy to be converted to electrical energy. A dry-cell battery stores energy in an immobilized electrolyte paste, which minimizes the need for water. Common examples of dry-cell batteries include zinc-carbon batteries and alkaline batteries.


It is converted into kinetic energy by means of an electric motor. A motor works when an electric current passes through a wire in a magnetic field. The wire turns, and some of the electric energy is turned into kinetic energy.

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Answer 2

1) in dry cell - chemical energy is converted to electrical energy.

2) In electric fan - electrical energy is converted to mechanical energy and    wind energy .